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Cell Biology MCQ

About _____ percent of all new cases of stis worldwide occur in people under the age of 26.

Answer

Correct Answer: 50

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In plants and algae, _____ is the source of the electrons needed for photosynthesis.

CO2

H2O

NADPH

H+

Answer

Correct Answer: H2O

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The cell cycle results in the production of ______.

Four cells, each with the same amount of genetic material and the same genetic information

Two cells, each with the same amount of genetic material but with different genetic information

Two cells, each with the same amount of genetic material and the same genetic information

Four cells, each with the same amount of genetic material but with different genetic information

Answer

Correct Answer: Two cells, each with the same amount of genetic material and the same genetic information

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Replication moves outward from the origin in direction(s) and is said to be .

Both, unidirectional

Both, bidirectional

One, bidirectional

Unique, unidirectional

Answer

Correct Answer: Both, bidirectional

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Red blood cells undergo anaerobic metabolism, which means that they produce ________.

Lactate

Pyruvate

Acetyl coa

Ketones

Answer

Correct Answer: Lactate

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In humans, fertilization usually occurs ________ after intercourse, if an egg is present.

1-2 hours

6-24 hours

3-6 days

24-48 hours

7-10 days

Answer

Correct Answer: 6-24 hours

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In the redox reactions of cellular respiration, a cell uses both _____ and oxygen.

Glucose

Carbon dioxide

ATP

Water

Answer

Correct Answer: Glucose

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A ____ is software that is a cumulative package of all security updates plus additional features.

Service pack

Hotfix

Patch

Rollout

Answer

Correct Answer: Service pack

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Cells obtain energy by __________ food molecules such as glucose.

Reducing

Oxidizing

Redoxing

Anabolizing

Answer

Correct Answer: Oxidizing

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C4 plants have evolved different photosynthetic mechanisms. these plants _____.

Are adapted to living in cold, wet climates where there is no water shortage

Conserve water more efficiently by shutting their stomata during the day

Fix CO2 into a four-carbon compound instead of a three-carbon compound

Do not fix CO2 through the Calvin cycle

Fix O2 instead of CO2

Answer

Correct Answer: Fix CO2 into a four-carbon compound instead of a three-carbon compound

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Autotrophs use the ____________ to make organic molecules.

Calvin cycle

Light reactions

Energy

NAPDH

Answer

Correct Answer: Calvin cycle

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At the conclusion of glycolysis, most of glucose's chemical energy is found in the ________.

NADH

ATP

Pyruvic acid molecules

Acetyl CoA

Answer

Correct Answer: Pyruvic acid molecules

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After 3-pga is phosphorylated, it receives energized electrons from _____.

NADPH

NADP+

ADP

CO2

Answer

Correct Answer: NADPH

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After 3-pga is phosphorylated, it is reduced by _____.

CO2

NADPH

ATP

ADP

Answer

Correct Answer: NADPH

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Yeast is used to make bread rise by producing ________ during fermentation.

CO2

H2O

H2SO4

None of the above

Answer

Correct Answer: CO2

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When something appears blue, it is absorbing all colors except __________.

Blue.

Green.

Orange

Red.

Answer

Correct Answer: Blue.

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When oxygen is released as a result of photosynthesis, it is a direct by-product of _____.

Reducing NADP+

Splitting water molecules.

Chemiosmosis

None of these

Answer

Correct Answer: Splitting water molecules.

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The spindle apparatus disintegrates during _____. anaphase telophase interphase metaphase

Metaphase

Prophase

Telophase

Anaphase

Answer

Correct Answer: Telophase

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The process of respiration is ___ % efficient at harnessing the chemical energy in food.

Cellular respiration is more efficient at harnessing energy from glucose than car engines are at harnessing energy from gasoline.

The quantity of heat needed to raise the temperature of 1 kg of water by 1°C.

Delivers its electron load to the first electron carrier molecule

ATP is synthesized when H+ ions move through a channel in ATP synthase.

Answer

Correct Answer: Cellular respiration is more efficient at harnessing energy from glucose than car engines are at harnessing energy from gasoline.

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The primary role of oxygen in cellular respiration is to _____.

Combine with lactate, forming pyruvate

Yield energy in the form of ATP as it is passed down the respiratory chain

Combine with carbon, forming CO2

Act as an acceptor for electrons and hydrogen, forming water

Answer

Correct Answer: Act as an acceptor for electrons and hydrogen, forming water

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The most important role of pigments in photosynthesis is to _____.

Release energy from glucose molecules

Store energy in glucose molecules

Capture light energy

Screen out harmful ultraviolet rays

Answer

Correct Answer: Capture light energy

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The light reactions of photosynthesis occur in the __________.

Stroma.

Thylakoid membranes.

Thylakoids.

Photosystems.

Answer

Correct Answer: Thylakoids.

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The growth cycle requires _____ to run.

Cells

Organisms

Chemicals

Energy.

Answer

Correct Answer: Energy.

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Limiting calories and increasing exercise will cause cells to harvest energy from _____ molecules.

Fat

Protein

Lipid

Sugar

Answer

Correct Answer: Fat

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Large amounts of oxygen gas first appeared in earth's atmosphere about ______ years ago.

2.7 billion

2.33 billion

Acetyl CoA

2.8 billon

Answer

Correct Answer: 2.7 billion

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A prokaryotic cell has _ but does not have _.

Ribosomes; a plant or animal

DNA; membrane-bound organelles

Peptidoglycan layer; but not the capsule

None of these

Answer

Correct Answer: DNA; membrane-bound organelles

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The hybridization of the oxygen atom labeled x in the structure below is ________.

Sp.

Sp2.

Sp3.

Sp3d.

Answer

Correct Answer: Sp2.

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For a molecule with the formula ab3, the molecular shape is ________.

Linear, octahedral, or bent

Linear, bent, or trigonal planar

Linear, bent, or T-shaped

Tetrahedral

Trigonal planar, trigonal pyramidal, or T-shaped

Answer

Correct Answer: Trigonal planar, trigonal pyramidal, or T-shaped

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Ribosomal rna accumulates within __________.

Endoplasmic reticulum

Mitochondria

Nucleoli

Golgi complexes

Answer

Correct Answer: Nucleoli

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Biochemical analysis uses similarities in __________ as evidence for evolutionary relationships.

DNA sequences

Bone structure

Cellular architecture

Homologous structures

Answer

Correct Answer: DNA sequences

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Eukaryotic dna is located in the , and its message reaches the ribosome via the _.

Nucleus; nuclear pores

Cytoplasm; microfilaments

Nucleus; vesicles

Golgi apparatus

Answer

Correct Answer: Nucleus; nuclear pores

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Epidermal growth factor stimulates __________.

Mitosis.

Repair.

Glandular secretion.

All of the above

Answer

Correct Answer: All of the above

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Enzymes have specific _____ that determine their function.

Lipids

Shapes

Starches

Carbohydrates

Answer

Correct Answer: Shapes

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In a dna double helix, _____________________.

The two DNA strands are identical

Purines pair with purines

Thymine pairs with cytosine

The two DNA strands run antiparallel

Answer

Correct Answer: The two DNA strands run antiparallel

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Facilitated diffusion would not usually be needed to move _______________________across a membrane?

Large, hydrophobic molecules

Small, hydrophobic molecules

Small, hydrophobic membrane

None of the above

Answer

Correct Answer: Small, hydrophobic molecules

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A bacterium running low on nadph could ________ to generate more of this coenzyme.

Invoke the pentose phosphate pathway

Biosynthesis of DNA and RNA

Citric acid cycle intermediates and glycolysis products

Not directly needed to carry out this process

Answer

Correct Answer: Invoke the pentose phosphate pathway

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The 2n number for the cell depicted here is ________.

One

Four

Eight

Two

Answer

Correct Answer: Two

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If there is no flow of extraembryonic fluid over a mouse embryo, ___________.

Most of the embryos die early in development

The majority of embryos still orient correctly

The left-right asymmetry decision for the embryo is made at random

The majority of embryos exhibit situs inversus

The embryos exhibit no asymmetrical arrangement of organs

Answer

Correct Answer: The left-right asymmetry decision for the embryo is made at random

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Microtubules have an inner diameter of and an outer diameter of .

15 mm; 25 mm

8 nm; 12 nm

25 nm; 30 nm

15 nm; 25 nm

7 mm; 14 mm

Answer

Correct Answer: 25 nm; 30 nm

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Absorbance is _________________________ the concentration of molecules in a solution.

Molarity

Mole

Osmosis

Lysis

Answer

Correct Answer: Molarity

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Gene silencing is called __________.

Genomic imprinting

A linkage analysis

Polyploidism

A translocation

Answer

Correct Answer: Genomic imprinting

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Nuclear pores are organized with _______ symmetry

Sixfold

Eightfold

Ninefold

Tenfold.

Answer

Correct Answer: Eightfold

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Protein synthesis _ during exercise and __ after exercise.

Increases, decreases

Decreases, decreases

Increases, increases

Decreases, increases

Answer

Correct Answer: Decreases, increases

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In plant cells, ______ may contain organic nutrients, pigments, and poisons.

Digest itself

Cell wall and central vacuole

Central vacuoles

In fresh water

Golgi Apparatus

Answer

Correct Answer: Central vacuoles

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The ability to distinguish among 20004000 olfactory stimuli is called __________.

Trigeminal nerve

Gustatory receptors have a seperate receptor cell and sensory neuron

Olfactory discrimination

Nerve deafness

Answer

Correct Answer: Olfactory discrimination

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A karyotype (a chromosome display) would be unable to determine ______.

Down syndrome

Turner syndrome

Eye color

None of this

Answer

Correct Answer: Eye color

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Information coming into the central nervous system is transmitted along ________ neurons.

Afferent

Sensory

Efferent

Afferent and sensory

Sensory and efferent

Answer

Correct Answer: Afferent and sensory

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The ____________ phase is when most cell growth will occur; dna is unreplicated.

Second gap (g2)

First gap (G1)

2 of the 4

1n -> 1n

Answer

Correct Answer: First gap (G1)

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The tca cycle enzymes are located in the _________ in bacterial and archaeal cells.

Chloroplasts

Nucleus

Cytoplasm

Mitochondria

Answer

Correct Answer: Cytoplasm

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Asexual reproduction _____. see concept 13.1 (page 255)

Spores

Gametes (sperm and eggs)

Requires both meiosis and mitosis

Produces offspring genetically identical to the parent

Leads to a loss of genetic material

Answer

Correct Answer: Produces offspring genetically identical to the parent

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The _____ forms of the electron carriers nad+/nadh and fadh/fadh2 have high potential energy.

Oxidized

Inhibited; activated

Reduced

Oxygen

Answer

Correct Answer: Reduced

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Deamination is the removal of a(n) _____ group in proteins.

Carboxyl

Amino

Phosphate

Hydroxyl

None of the choices is correct.

Answer

Correct Answer: Amino

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The "proton pumps" indicated in the figure are physically associated with ______.

The electron transport chain

The Krebs cycle

The ATP synthase

Glycolysis

Answer

Correct Answer: The electron transport chain

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The ordinary light microscope is called a bright-field microscope because _____.

The object appears light on a dark background

The object appears dark on a light background

Both A and B

None of these

Answer

Correct Answer: The object appears dark on a light background

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Chemiosmosis uses __________ to supply the energy necessary to phosphorylate adp to atp.

A redox reaction.

Xylem membranes.

A proton gradient

It is an electrochemical gradient.

Answer

Correct Answer: A proton gradient

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Incoming photons of light energy initiate photosynthesis by _____.

Exciting electrons in pigment molecules within the photosystems, raising them to a higher energy level

ATP + NADPH + 3CO2→ G3P

Photosynthesis requires carbon dioxide and water for the production of sugar and oxygen.

None of these

Answer

Correct Answer: Exciting electrons in pigment molecules within the photosystems, raising them to a higher energy level

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A generalized ____________ contains an antenna complex and a reaction center.

Photosystem

Chlorophyll

Antenna Complex

Water

Answer

Correct Answer: Photosystem

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We inhale o2 and we exhale co2. carbon dioxide is produced __________.

When oxygen acquires electrons and protons at the end of the electron transport chain

During the electron transfer steps of oxidative phosphorylation

During the formation of pyruvate

In the reaction that creates acetyl CoA (coenzyme A) from pyruvate

Answer

Correct Answer: In the reaction that creates acetyl CoA (coenzyme A) from pyruvate

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The karyotype of a trisomic individual is symbolized as ____.

10 - Haploid cells only contain one copy of each chromosome.

21 - Down syndrome is characterized by trisomy 21.

2n+1 - Trisomy indicates an extra copy of one chromosome.

Turner syndrome is characterized by a chromosome pattern of XO, or one X chromosome and no Y chromosome.

Answer

Correct Answer: 2n+1 - Trisomy indicates an extra copy of one chromosome.

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Chromatin consists of ______.

DNA and protein

RNA and protein

Protein only

DNA only

Answer

Correct Answer: DNA and protein

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During the absorptive state, metabolism favors energy storage and __________.

Anabolism

The sum of all chemical reactions in the body

The buildup of abnormal byproducts

Catabolic reaction

Mitochondrion

Answer

Correct Answer: Anabolism

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A typical cell contains "powerhouses," which is another name for ____.

Mitochondria

Stored as glycogen and fat

Heat

All of this

Answer

Correct Answer: Mitochondria

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In conifers, male gametophytes are called _______ and are formed by the division of microspores.

Zygotes

Strobili

Pollen

Megasporangia

Answer

Correct Answer: Pollen

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During translation, uncharged trna molecules leave the ribosome from the _________ site.

Termination

Answer

Correct Answer: E

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During the germinal period, the first task of the zygote's outer cells is _____.

Germination

Implantation

Differentiation

Duplication

Answer

Correct Answer: Implantation

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During the final events of cellular respiration, oxygen combines with to form .

Hydrogen ions only; water carbon only; CO2

Energy-depleted electrons and carbon; CO2

Energy-depleted electrons and hydrogen ions

Water energy-depleted electrons only; water

Answer

Correct Answer: Energy-depleted electrons and hydrogen ions

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During cellular respiration, energy is stored in the form of _______.

Ood

Oxygen

ATP

Water.

Answer

Correct Answer: ATP

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During _____, the sister chromatids line up in the midplane of the cell.

Prophase.

Anaphase.

Metaphase.

Telophase.

Answer

Correct Answer: Metaphase.

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Cytokinesis typically occurs during the ______ stage of mitosis.

Prophase

Metaphase

Anaphase

Telophase

Answer

Correct Answer: Anaphase

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The golgi apparatus packages materials into ________ for transport or export.

Cytoplasm

Vesicles

Mitochondria

Ribosomes

Answer

Correct Answer: Vesicles

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Increasing the pressure above the beaker is analogous to _______.

An increase in solutes found in the blood

An increase in heart rate

An increase in blood pressure

A decrease in blood volume

Answer

Correct Answer: An increase in blood pressure

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If a cell has accumulated dna damage, it is unlikely to _____.

Enter g1 From mitosis

Activate dna Repair mechanisms

Pass the G2 checkpoint

Meso, endo, echo

Answer

Correct Answer: Pass the G2 checkpoint

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Calcium ions could be described as "third messengers" because __________.

They function in three separate cellular compartments: cytosol, ER, and mitochondria

They are small cytosolic signal molecules whose activity is regulated first by a ligand and second by a second messenger, making them the third step in a cascade

They are the third type of regulators released by a G protein-mediated signal cascade (cAMP = 1st IP3/DAG 2nd)

They are stored in compartments inside the cytoplasm, placing them in a third compartment after the extracellular and cytosolic spaces

Answer

Correct Answer: They are small cytosolic signal molecules whose activity is regulated first by a ligand and second by a second messenger, making them the third step in a cascade

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Anterograde movement of transition vesicles is from __________.

The cis Golgi to the trans Golgi

The rough Er to the trans Golgi

The rough ER to the cis Golgi

The trans golgi to secrete at the plasma membrane

Answer

Correct Answer: The rough ER to the cis Golgi

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All collagen family members consist of _ chains arranged in a ___.

Hyaluronic acid

3, triple helix

Extracellular matrix

All of these

Answer

Correct Answer: 3, triple helix

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Mpf is a dimer consisting of _____.

Cyclin and a cyclin-dependent kinase

An enzyme that attaches phosphate groups to other proteins

The cells enter mitosis.

None of these

Answer

Correct Answer: Cyclin and a cyclin-dependent kinase

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Centrosomes are structures that contain oriented .

Anchoring sites

Transport proteins

Centrioles perpendicularly

Cell movement

Answer

Correct Answer: Centrioles perpendicularly

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Binding of calcium to calmodulin is a step in excitation-contraction coupling of ________ cells.

Skeletal muscle

Smooth muscle

Cardiac and visceral smooth muscle

Cardiac muscle

Answer

Correct Answer: Smooth muscle

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Emerging viruses that infect human cells can originate from __________.

Serves as the template for the creation of two complete sets of DNA

A virus spreading from one host species to humans

A specific nucleotide sequence in DNA that signals the RNA polymerase to stop

Transfer RNA, ribosomes, AUG codons

Answer

Correct Answer: A virus spreading from one host species to humans

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The essential molecule __________ comprises over 60 percent of any living organism's cells.

Water

Proteins

Diffusion

Oxygen

Answer

Correct Answer: Water

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Signals from the extracellular matrix to the cytoskeleton may be transmitted by _____.

Intracellular

Kinase

Desmosomes

Integrins

Answer

Correct Answer: Integrins

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Cancerous cells may continuously change their glycocalyx. this may result in ________.

The function of a cell dictates the structure and organelles of the cells.

Phospholipids form a bilayer that is largely impermeable to water-soluble molecules

The cancer cell avoiding destruction by keeping one step ahead of the immune system

Chromosomal centromeres split and chromosomes migrate to opposite ends of the cell

Answer

Correct Answer: The cancer cell avoiding destruction by keeping one step ahead of the immune system

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Green algae differ from land plants in that many green algae _____.

Are unicellular

Have plastids

Have alternation of generations

Have cell walls containing cellulose

Answer

Correct Answer: Are unicellular

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In leukemia, an overproduction of abnormal white blood cells can also mean __________.

Too few normal blood cells

Primary active transport, Secondary active transport, Exocytosis, Endocytosis

Fructose goes from high to low

None of these

Answer

Correct Answer: Too few normal blood cells

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The cleavage of glycogen by glycogen phosphorylase releases _____

Glucose-1-phosphate

Fructose-1-phosphate

Galactose-1-phosphate

Cellulose

Nothing: glycogen phosphorylase cannot cleave glycogen

Answer

Correct Answer: Glucose-1-phosphate

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When we say that an organism is haploid, we mean that __________.

Its cells each have one set of chromosomes.

Multiplication of body cells

Nondisjunction

Cytokinesis

Answer

Correct Answer: Its cells each have one set of chromosomes.

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The reaction a --> b + c + heat is released in a(n) _____ reaction.

Dehydration synthesis

Exchange

Endergonic

Anabolic

Exergonic.

Answer

Correct Answer: Exergonic.

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The process of photosynthesis probably originated _____.

In prokaryotes

Minerals

Coal

Atmosphere

Answer

Correct Answer: In prokaryotes

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The karyotype above shows ________.

Requires DNA polymerase and RNA polymerase

A repeating sugar-phosphate-sugar-phosphate pattern

The mitotic spindle begins to form

Trisomy 21, a cause of downsyndrome

Answer

Correct Answer: Trisomy 21, a cause of downsyndrome

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The inheritance of wheat kernel color shown in figure 14.21 is an example of _____.

Polygenic inheritance

Autosomal recessive

Cross the green-pod plant with a yellow-pod plant.

During metaphase I tetrads align along the metaphase plate.

Answer

Correct Answer: Polygenic inheritance

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The first electron acceptor of cellular respiration is ______.

Making ATP to power cell activities

Water

Oxygen

Carbon dioxide, water

Answer

Correct Answer: Oxygen

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Sexual intercourse in humans ______.

Allows a haploid sperm cell to fertilize a haploid egg cell

Produces a haploid individual

Produces an individual with 23 chromosomes

Combines two diploid gametes, producing a zygote

Answer

Correct Answer: Allows a haploid sperm cell to fertilize a haploid egg cell

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Movement of the chromosomes during anaphase would be most affected by a drug that prevents _____.

Reduces cyclin concentrations.

Prevents elongation of microtubules.

Prevents shortening of microtubules.

Increases cyclin concentrations.

Prevents attachment of the microtubules to the kinetochore.

Answer

Correct Answer: Prevents shortening of microtubules.

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Mitochondria and chloroplasts are thought to have been ______

A photosynthetic cyanobacterium

Cytoskeletal elements

Endosymbiosis

Membrane proliferation

Answer

Correct Answer: Endosymbiosis

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Meiosis i produces _____ cells

Two, haploid.

Gametes,

Two identical

Daughter cells

Answer

Correct Answer: Two, haploid.

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Crossing over during prophase i results in ________.

Genetic recombination.

Telophase

Autosomes

Nucleus

Answer

Correct Answer: Genetic recombination.

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Carbon dioxide is split to form oxygen gas and carbon compounds _____.

In neither photosynthesis nor respiration

During respiration

During photosynthesis and respiration

Answer

Correct Answer: In neither photosynthesis nor respiration

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Carbohydrates and fats are considered high-energy foods because they _____.

Have a lot of oxygen atoms.

Slowest source of energy

Have no nitrogen in their makeup.

Answer

Correct Answer: Have a lot of oxygen atoms.

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According to the induced fit hypothesis of enzyme catalysis, _____.

Is involved in the catalytic reaction of the enzyme

Changing the shape of the enzyme's active site

The binding of the substrate changes the shape of the enzyme's active site

The catalyzed reaction will have the same change in G.

Answer

Correct Answer: The binding of the substrate changes the shape of the enzyme's active site

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________ cells in leaves are specialized for photosynthesis.

Mitochondria

Mesophyll

Van Helmont

NADPH

Answer

Correct Answer: Mesophyll

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A ________ is a thin slice of brain used in histology.

Cell fragment

Brain cut

Section

Horizontal view

Tissue segment

Answer

Correct Answer: Section

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During ketosis caused by inadequate ingestion of carbohydrates, ______.

This process produces some ATP and carbon dioxide in the mitochondrion.

The glycogen content of the liver is reduced

Glycolysis produces pyruvic acid, which enters the mitochondrion.made

They decrease the incidence of cholesterol deposition in arterial walls

Answer

Correct Answer: The glycogen content of the liver is reduced

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The decline of mpf activity at the end of mitosis is due to _____.

Normal growth and cell function

No chromosomes in the center of the cell

M phase would begin prematurely.

The degradation of cyclin

Answer

Correct Answer: The degradation of cyclin

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Both viruses and carcinogenic chemicals can cause tumors by __________.

Creating new cellular genes Killing cells

Disruption of control over the rate of cell division Slowing cellular growth

Viruses and carcinogenic chemicals both cause tumors by interfering with the normal cellular controls over division and growth.

Answer

Correct Answer: Viruses and carcinogenic chemicals both cause tumors by interfering with the normal cellular controls over division and growth.

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A dendritic or langerhans cell is a specialized ________.

Keratinocytes

Phagocytic cell

Reticular layer

Stratum basale

Answer

Correct Answer: Phagocytic cell

Note: This Question is unanswered, help us to find answer for this one

The color that we see when looking at a pigmented object is ______.

The wavelengths that are absorbed by the pigmented object

The wavelengths that are reflected or transmitted by the pigmented object

The wavelengths that have been raised to an excited state by the pigmented object

The wavelengths that the pigmented object created after interacting with sunlight

Answer

Correct Answer: The wavelengths that are reflected or transmitted by the pigmented object

Note: This Question is unanswered, help us to find answer for this one

The 23rd pair of chromosomes in males contains the __________- shaped chromosome.

None of these

Answer

Correct Answer: XY

Note: This Question is unanswered, help us to find answer for this one

Most nadh molecules generated during cellular respiration are produced during __________.

The citric acid cycle

The sulphuric acid cycle

The nitric acid cycle

Noneof the above

Answer

Correct Answer: The citric acid cycle

Note: This Question is unanswered, help us to find answer for this one

With the exception of gametes, a human cell contains _____ chromosomes.

Answer

Correct Answer: 46

Note: This Question is unanswered, help us to find answer for this one

Unlike white blood cells, red blood cells lose their and as they mature.

Nucleus, organelles

Organelles, Nucleus

Both a and b

None of the above

Answer

Correct Answer: Nucleus, organelles

Note: This Question is unanswered, help us to find answer for this one

The _____ is composed of dna and protein.

Chromatin

Centriole

Mitochondrion

Ribosome

Flagellum

Answer

Correct Answer: Chromatin

Note: This Question is unanswered, help us to find answer for this one

Stroma is the __________.

Thick fluid found inside the chloroplast

Dense material surrounding the thylakoids

Both a and b

None of the above

Answer

Correct Answer: Both a and b

Note: This Question is unanswered, help us to find answer for this one

Squamous cells are part of _ tissue and are _ shaped.

Epithelial; irregularly

Connective; cube

Nervous; column

Epithelial; cube

Answer

Correct Answer: Epithelial; irregularly

Note: This Question is unanswered, help us to find answer for this one

Sexual and asexual reproduction are alike in that __________.

They both give rise to genetically distinct offspring

They both involve two parents

They both require meiosis to complete the reproductive cycle

They can both occur in multicellular organisms

In both cases, every parent transmits all of its genes to its progeny

Answer

Correct Answer: They can both occur in multicellular organisms

Note: This Question is unanswered, help us to find answer for this one

Rubisco is __________.

Is the most abundant protein in the world

Is the most non-abundant protein in the world

Is may or may not abundant protien in the world

None of the above

Answer

Correct Answer: Is the most abundant protein in the world

Note: This Question is unanswered, help us to find answer for this one

Ribosomes are a collection of _ that are needed for __.

Small proteins; translation

Proteins and small RNAs; translation

Proteins and tRNAs; transcription

Proteins and mRNAs; translation

MRNAs and tRNAs; translation

Answer

Correct Answer: Proteins and small RNAs; translation

Note: This Question is unanswered, help us to find answer for this one

Proton pumps within the electron transport chain transport h+ ions __________.

Matrix to inter membrane space

Inter membrane space, matrix

Both a and b

None of the above

Answer

Correct Answer: Matrix to inter membrane space

Note: This Question is unanswered, help us to find answer for this one

Proteins are synthesized from the -terminus to the -terminus.

Amino carboxy

Simple carboxy

Hydro carboxy

None of the above

Answer

Correct Answer: Amino carboxy

Note: This Question is unanswered, help us to find answer for this one

Plant hormones act by directly affecting the activities of _____.

Genes

Enzymes

Signal transduction pathways

Genes and enzymes

Membranes

Answer

Correct Answer: Signal transduction pathways

Note: This Question is unanswered, help us to find answer for this one

Plant hormonal regulation differs from animal hormonal regulation in that _____.

There are no dedicated hormone-producing organs in plants as there are in animals

All production of hormones is local in plants with little long-distance transport

Only animal hormone concentrations are developmentally regulated

Only animal hormones may have either external or internal receptors

Answer

Correct Answer: There are no dedicated hormone-producing organs in plants as there are in animals

Note: This Question is unanswered, help us to find answer for this one

Photosynthesis is conducted in the ____ _.

Chloroplast

Chlorofluorocarbon

Both a and b

None of the above

Answer

Correct Answer: Chloroplast

Note: This Question is unanswered, help us to find answer for this one

Passive movement of a solute by a carrier protein is called __________.

Facilitated diffusion

Endoplasmic diffusion

Both a and b

None of the above

Answer

Correct Answer: Facilitated diffusion

Note: This Question is unanswered, help us to find answer for this one

Oogenesis in females is similar to ________ in males.

Male spermatogenesis

Female spermatogenesis

Both a and b

None of the above

Answer

Correct Answer: Male spermatogenesis

Note: This Question is unanswered, help us to find answer for this one

Most specialized cells remain in the _____ phase of the cell's life cycle.

Answer

Correct Answer: G0

Note: This Question is unanswered, help us to find answer for this one

Most potential energy captured from food molecules is stored as ___.

ATP

AMP

ADP

Answer

Correct Answer: ATP

Note: This Question is unanswered, help us to find answer for this one

Most enzymes are _____.

Proteins

Carbohydrates

Energy

Answer

Correct Answer: Proteins

Note: This Question is unanswered, help us to find answer for this one

Molecules tend to move spontaneously ________ their chemical gradient.

Down

Around

Over

Through

Answer

Correct Answer: Down

Note: This Question is unanswered, help us to find answer for this one

Molecule a is a __________.

Triglyceride

Nucleotide

Steroid

Phospholipid

Answer

Correct Answer: Phospholipid

Note: This Question is unanswered, help us to find answer for this one

Mitochondria are found in _____.

Plant cells only

Animal cells only

Both plant cells and animal cells

Neither plant cells nor animal cells

Animal cells and bacterial cells

Answer

Correct Answer: Both plant cells and animal cells

Note: This Question is unanswered, help us to find answer for this one

Meiosis starts with _ cells and produces _ gametes.

Diploid, haploid

Diploid, diploid

Haploid, haploid

Haploid, diploid

Answer

Correct Answer: Diploid, haploid

Note: This Question is unanswered, help us to find answer for this one

Meiosis produces ________ daughter cells.

Two haploid

Two diploid

Four haploid

Four diploid

Answer

Correct Answer: Four haploid

Note: This Question is unanswered, help us to find answer for this one

Meiosis ii and mitosis are similar in that _____________ are pulled apart in anaphase.

Homologous chromosomes

Sister chromatids

Sister chromosomes

Non-homologous chromosomes

Answer

Correct Answer: Sister chromatids

Note: This Question is unanswered, help us to find answer for this one

Meiosis differs from mitosis in that _____ only occurs in meiosis.

The fragmentation of the nuclear envelope

Cytokinesis

Crossing over

The formation of a spindle

Answer

Correct Answer: Crossing over

Note: This Question is unanswered, help us to find answer for this one

Meiosis and cytokinesis result in the formation of __________.

3 haploid cells

4 haploid cells

6 haploid cells

2 haploid cells

Answer

Correct Answer: 4 haploid cells

Note: This Question is unanswered, help us to find answer for this one

Maturation of a lysosome occurs when __________.

Early endosomes fuse with endocytosedvesicles

Late endosomes acidify to activate the acid hydrolases

Material is digested and sorted and buds off the lysosome

Acid hydrolases are packaged into vesicles and bud off the trans Golgi

Answer

Correct Answer: Late endosomes acidify to activate the acid hydrolases

Note: This Question is unanswered, help us to find answer for this one

Inducible enzymes __________.

Used for the breaking-down of things in the cell

Used for the breaking-down of things in the vesel

Used for the breaking-down of things in the bone

None of the above

Answer

Correct Answer: Used for the breaking-down of things in the cell

Note: This Question is unanswered, help us to find answer for this one

In the z-scheme is the initial electron donor and is the final electron acceptor

Water; NADP

NADPH; oxygen

Water; oxygen

ATP; carbon dioxide

Answer

Correct Answer: Water; NADP

Note: This Question is unanswered, help us to find answer for this one

In the reaction glucose + fructose sucrose + water, _ is a reactant and _ is a product.

ATP ... oxygen

Glucose... water

Oxygen ... ATP

Carbon dioxide ... water

Answer

Correct Answer: Glucose... water

Note: This Question is unanswered, help us to find answer for this one

In the golgi complex, __________.

Proteins are N-glycosylated carbohydrate

Side chains of glycoproteins are modified

Proteins are synthesized

The anterograde transport system is used to move vesicles back to the ER

Answer

Correct Answer: Side chains of glycoproteins are modified

Note: This Question is unanswered, help us to find answer for this one

In the body, fat cells store _ as ____.

Triglycerides; essential fatty acids

Glycerol; monoglycerides

Triglycerides; adipose tissue

Micelles; chylomicrons

Answer

Correct Answer: Triglycerides; adipose tissue

Note: This Question is unanswered, help us to find answer for this one

In mitotic metaphase, a cell with eight sister chromatids has _______ centromeres.

One

Two

Four

Eight

Answer

Correct Answer: Four

Note: This Question is unanswered, help us to find answer for this one

In meiosis, of cross over and form __.

Nonsister chromatids; homologous pairs; chiasmata

Sister chromatids; homologous pairs; chiasmata

Homologous pairs; sister chromatids; chiasmata

None of the above

Answer

Correct Answer: Nonsister chromatids; homologous pairs; chiasmata

Note: This Question is unanswered, help us to find answer for this one

Hydrolases are generally involved in ________ reactions.

Anabolic

Catabolic

Anabolic and catabolic

Neither anabolic nor catabolic

Oxidation-reduction

Answer

Correct Answer: Catabolic

Note: This Question is unanswered, help us to find answer for this one

For the duration of meiosis i, each chromosome _____.

Consists of a single strand of DNA

Is joined with its homologous pair to form a synaptonemal complex

Is paired with a homologous chromosome

Consists of two sister chromatids joined by a centromere

Answer

Correct Answer: Consists of two sister chromatids joined by a centromere

Note: This Question is unanswered, help us to find answer for this one

Energy released in an electron transport chain is derived from __________.

ATP

Oxidation-reduction reactions

The catabolism of glucose

The movement of protons

Answer

Correct Answer: Oxidation-reduction reactions

Note: This Question is unanswered, help us to find answer for this one

Each fadh2 from the krebs cycle enters the electron transport system and gives rise to _____ atps.

Answer

Correct Answer: 2

Note: This Question is unanswered, help us to find answer for this one

During the synthesis of acetyl-coa from pyruvic acid, ________ is produced.

FADH2

ATP

H2O

Acetic acid

NADH

Answer

Correct Answer: NADH

Note: This Question is unanswered, help us to find answer for this one

During pyruvate processing, two carbons from pyruvate combine with ____.

Carbon dioxide

Coenzyme A

ADP

NAD+

Answer

Correct Answer: Coenzyme A

Note: This Question is unanswered, help us to find answer for this one

During prophase a homologous pair of chromosomes consists of _____.

Two chromosomes

Four chromatids

Both a and b

None of the above

Answer

Correct Answer: Both a and b

Note: This Question is unanswered, help us to find answer for this one

During oxidative phosphorylation, ____________ and fadh are oxidized to power atp production.

NADH

FADH2

H2O

None of the above

Answer

Correct Answer: NADH

Note: This Question is unanswered, help us to find answer for this one

During meiosis i, ____________ separate and move towards opposite ends of the poles.

Homologous chromosomes

Ribosomes

Simple chromosomes

Both a and b

Answer

Correct Answer: Homologous chromosomes

Note: This Question is unanswered, help us to find answer for this one

During cleavage, cell division is accompanied by a(n) ______________.

Increase in cell size

Decrease in cell size

Neither incraese nor decrease

None of the above

Answer

Correct Answer: Decrease in cell size

Note: This Question is unanswered, help us to find answer for this one

Dead or damaged cells are replaced by the process of ________.

Binary fission

Mitosis

Meiosis

Fertilization

Answer

Correct Answer: Mitosis

Note: This Question is unanswered, help us to find answer for this one

Cytokinesis typically begins during the ______ stage of mitosis.

Interphase

Prophase

Telophase

Metaphase

Autosomes

Answer

Correct Answer: Telophase

Note: This Question is unanswered, help us to find answer for this one

Crossing over is important because it _____.

Allows the exchange of different versions of genes between homologous chromosomes

Prevents variation in gametes

Holds tetrads together

Ensures that homologous chromosomes pair up

Answer

Correct Answer: Allows the exchange of different versions of genes between homologous chromosomes

Note: This Question is unanswered, help us to find answer for this one

Consider the figure below. is to a mitochondrion as is to a chloroplast.

Glucose ... O2

O2 ... CO2

ATP ... CO2

Sunlight .... chemical energy

Answer

Correct Answer: O2 ... CO2

Note: This Question is unanswered, help us to find answer for this one

Characteristics of meiosis include _____.

The most common kind of cell division

Four daughter cells produced when parent cell divides

Same number of chromosomes in each daughter cell as in the parent cell

Different DNA in the daughter cell than in the parent cell

Answer

Correct Answer: Four daughter cells produced when parent cell divides
Different DNA in the daughter cell than in the parent cell

Note: This question has more than 1 correct answers

Note: This Question is unanswered, help us to find answer for this one

Cells use _____ to get energy only when carbohydrates are not available.

Nucleic acids

Lipids

Hormones

Proteins

Answer

Correct Answer: Lipids

Note: This Question is unanswered, help us to find answer for this one

Cells become specialized through the process of _____.

Mitosis

Sexual reproduction

Differentiation

Replication

Answer

Correct Answer: Differentiation

Note: This Question is unanswered, help us to find answer for this one

Carbon fixation involves the addition of carbon dioxide to _____.

Rubisco

NADPH

G3P

RuBP

3-PGA

Answer

Correct Answer: RuBP

Note: This Question is unanswered, help us to find answer for this one

Based on the figure above, when pyruvate is converted to acetyl coa it is ______.

Phosphorylated

Oxidized

Reduced

Anabolized

Answer

Correct Answer: Oxidized

Note: This Question is unanswered, help us to find answer for this one

A substrate-level phosphorylation occurs in the citric acid cycle when _____.

Atp is hydrolyzed to adp.

Nad+ is phosphorylated to nadh.

Gdp is phosphorylated to produce gtp

Pyruvate is oxidized

Answer

Correct Answer: Gdp is phosphorylated to produce gtp

Note: This Question is unanswered, help us to find answer for this one

A cell with an extensive area of smooth endoplasmic reticulum is specialized to _____.

Synthesize large quantities of lipids

Play a role in storage

Import and export protien molecules

Actively export protien molecules

Answer

Correct Answer: Synthesize large quantities of lipids

Note: This Question is unanswered, help us to find answer for this one

A cell entering mitosis with 32 chromosomes will produce daughter cells with __________.

16 chromosomes

64 chromosomes

32 pairs of chromosomes

64 pairs of chromosomes

None of the listed responses is correct.

Answer

Correct Answer: None of the listed responses is correct.

Note: This Question is unanswered, help us to find answer for this one

______ is the source of the oxygen gas released by a photosystem.

NADPH

H2O

Chlorophyll a

CO2

C6H12O6

Answer

Correct Answer: H2O

Note: This Question is unanswered, help us to find answer for this one

_____ phase is the period during the life of a cell when it has finished mitotic division.

G0 phase

M phase

G1 phase

Interphase

Answer

Correct Answer: G0 phase

Note: This Question is unanswered, help us to find answer for this one

While vegetative cells are metabolically _, cells in the spore form are metabolically _.

Active, inactive

Active; active

Inactive;active

Inactive; inactive

Answer

Correct Answer: Active, inactive

Note: This Question is unanswered, help us to find answer for this one

The term describes cellular respiration in the absence of .

Anaerobic; oxygen

Oxygen; anaerobic

Both a and b

None of the above

Answer

Correct Answer: Anaerobic; oxygen

Note: This Question is unanswered, help us to find answer for this one

The structure of a biological membrane is best described by the _______ model.

Fluid Mosaic

Fluid Mechanics

Both a and b

None of the above

Answer

Correct Answer: Fluid Mosaic

Note: This Question is unanswered, help us to find answer for this one

The plasma membrane is permeable to _, but impermeable to ___.

Nutrients; wastes

Proteins; nutrients

Phosphates; wastes

Nutrients; proteins

Wastes; nutrients

Answer

Correct Answer: Nutrients; proteins

Note: This Question is unanswered, help us to find answer for this one

The organic substance making up the cells of all living things is (are) _____.

Protoplasm

Cytoplasm

Tissue

Organelles

Answer

Correct Answer: Protoplasm

Note: This Question is unanswered, help us to find answer for this one

The myosin filament is characterized as a(n) _________ filament.

Bipolar

Unipolar

Tripolar

Parallel

Orthogonal

Answer

Correct Answer: Bipolar

Note: This Question is unanswered, help us to find answer for this one

The mitotic spindle is a microtubular structure that is involved in _____.

Splitting of the cell (cytokinesis) following mitosis

Separation of Sister Chromatids

Dissolving the nuclear membrane

Triggering the compaction and condensation of chromosomes

Answer

Correct Answer: Separation of Sister Chromatids

Note: This Question is unanswered, help us to find answer for this one

The mitotic cell cycle results in the production of ________.

Four cells, each with the same amount of genetic material and the same genetic information

Two cells, each with the same amount of genetic material but with different genetic information

Two cells, each with the same amount of genetic material and the same genetic information

Four cells, each with the same amount of genetic material but with different genetic information

Answer

Correct Answer: Two cells, each with the same amount of genetic material and the same genetic information

Note: This Question is unanswered, help us to find answer for this one

The first step of bacterial replication is _____.

DNA replication

Attachment of the DNA to the plasma membrane

Pinching of the plasma membrane

Separation of daughter cells

Answer

Correct Answer: DNA replication

Note: This Question is unanswered, help us to find answer for this one

The first gap in the cell cycle (g1) corresponds to _____.

Normal growth and cell function

The phase in which DNA is being replicated

The beginning of mitosis

The phase between DNA replication and the M phase

Answer

Correct Answer: Normal growth and cell function

Note: This Question is unanswered, help us to find answer for this one

The extracellular matrix of animal cells ______.

Provide avenues for the exchange of DNA

Protect and support cells

Are warehouses for the storage of extra lipids and carbohydrates

Are primarily sites of dead matter and waste materials

Answer

Correct Answer: Protect and support cells

Note: This Question is unanswered, help us to find answer for this one

The diploid phase of the human life cycle begins with _____.

Fertilization.

Mutation.

Seperation.

None of the above

Answer

Correct Answer: Fertilization.

Note: This Question is unanswered, help us to find answer for this one

The chemiosmotic process in chloroplasts involves the _____.

Establishment of a proton gradient across the thylakoid membrane

Establishment of a neutron gradient across the thylakoid membrane

Establishment of a electron gradient across the thylakoid membrane

None of the above

Answer

Correct Answer: Establishment of a proton gradient across the thylakoid membrane

Note: This Question is unanswered, help us to find answer for this one

The chemical reactants on the left produce on the right. adp + p + energy -> ____

ADP

ATP

GAG

STP

Answer

Correct Answer: ATP

Note: This Question is unanswered, help us to find answer for this one

The abo blood group is determined by __________ in the plasma membrane of rbcs.

Glycolipids

Antibodies

Antigen-antibody complexes

Agglutinins

Answer

Correct Answer: Glycolipids

Note: This Question is unanswered, help us to find answer for this one

The of glycogen from many glucose molecules is an reaction

Synthesis, exergonic

Decomposition, exergonic

Synthesis, endergonic

Decomposition, endergonic

Answer

Correct Answer: Synthesis, endergonic

Note: This Question is unanswered, help us to find answer for this one

The _______ is responsible for forming the outer, limiting barrier of a cell.

Mitochondia

Plasma Membrane

Centrosome

Peroxisome

Answer

Correct Answer: Plasma Membrane

Note: This Question is unanswered, help us to find answer for this one

Synapsis is the side-by-side alignment of __________.

Two homologous chromosomes, each consisting of two chromatids

Have one of each pair of chromosomes found in the parent cell

Homologous chromosomes

Haploid, and each chromosome consists of two chromatids

Answer

Correct Answer: Homologous chromosomes

Note: This Question is unanswered, help us to find answer for this one

Spores and gametes differ in that __________.

Gametes must fuse to form a zygote and continue development, but each spore can develop into an independent multicellular organisms on its own

Are identical copies of each other formed during DNA synthesis

Sister chromatids separate and migrate toward opposite poles.

Precise location of a gene on a chromosome

Answer

Correct Answer: Gametes must fuse to form a zygote and continue development, but each spore can develop into an independent multicellular organisms on its own

Note: This Question is unanswered, help us to find answer for this one

In aerobic respiration, nadh is oxidized at , while fadh2 is oxidized at .

Complex I; Complex II

Photosystem I; Photosystem II

Photosystem II; Photosystem I

Complex I; Complex I

Complex II; Complex III

Answer

Correct Answer: Complex I; Complex II

Note: This Question is unanswered, help us to find answer for this one

Glycolysis begins with a(n) ________ stage(s).

Energy-investment

Energy-conservation

Lysis

Lysis and energy-conservation

Energy-investment and conservation

Answer

Correct Answer: Energy-investment

Note: This Question is unanswered, help us to find answer for this one

C4 plants occur more commonly in desert conditions because _____

They produce water as a product of their photosynthetic pathways

The stomata open at night and close in the day

They produce carbon dioxide internally via photorespiration

They can fix carbon at the lower CO2 concentrations that develop when the stomata are closed

They store carbon by incorporating CO2 into organic acids that are later catabolized

Answer

Correct Answer: They can fix carbon at the lower CO2 concentrations that develop when the stomata are closed

Note: This Question is unanswered, help us to find answer for this one

At the end of _____ and cytokinesis there are four haploid cells.

Telophase II

Anaphase I

Metaphase II

Prophase II

Answer

Correct Answer: Telophase II

Note: This Question is unanswered, help us to find answer for this one

All of the following processes produce genetic variation among offspring except __________.

Segregation of sister chromatids during meiosis II

Chromosomes will not align properly in meiosis I.

Trisomy

Meiosis II is similar to mitosis in that sister chromatids of each chromosome separate.

Answer

Correct Answer: Segregation of sister chromatids during meiosis II

Note: This Question is unanswered, help us to find answer for this one

A ____________ is a display of all of the chromosomes of an organism.

Karyotype

DNA

RNA

None of the above

Answer

Correct Answer: Karyotype

Note: This Question is unanswered, help us to find answer for this one

Glucose and ____________ metabolism is crucial to the body.

Glycogen

Glycogenesis

Glycerol

Catabolic

Answer

Correct Answer: Glycogen

Note: This Question is unanswered, help us to find answer for this one

In a rosebush, chlorophyll is located in _____.

They use light energy to drive the synthesis of organic molecules from inorganic materials.

Thylakoid membranes

Thylakoid membrane and inner mitochondrial membrane

Thylakoids, which are in chloroplasts in the mesophyll cells of a leaf

Answer

Correct Answer: Thylakoids, which are in chloroplasts in the mesophyll cells of a leaf

Note: This Question is unanswered, help us to find answer for this one

During mitosis, the chromosomes move because _____.

Two chromosomes and four chromatids

Cell division is common in eukaryotes but rare in prokaryotes.

A check that chromosome replication has been successfully completed

They attach to a dynamic, precisely regulated mitotic spindle

Answer

Correct Answer: They attach to a dynamic, precisely regulated mitotic spindle

Note: This Question is unanswered, help us to find answer for this one

The citric acid cycle is a cycle because the starting molecule, _____, is regenerated at the end.

Oxaloacetate

Cytoplasm

Beta-oxidation

None of these

Answer

Correct Answer: Oxaloacetate

Note: This Question is unanswered, help us to find answer for this one

The cell that does not have a cell wall is the _____.

Human cheek cell

Onion cell

Both

None of these

Answer

Correct Answer: Human cheek cell

Note: This Question is unanswered, help us to find answer for this one

One of the compounds that is a direct output of the calvin cycle is ______.

C6H12O6

NADPH

G3P

ATP

Answer

Correct Answer: G3P

Note: This Question is unanswered, help us to find answer for this one

In photosynthesis, redox reactions ultimately transfer electrons from to .

O2... CO2

C6H12O6... O2

H2O... C6H12O6

H2O... CO2

Answer

Correct Answer: H2O... CO2

Note: This Question is unanswered, help us to find answer for this one

Examine the figure below. nucleosomes are made of ________.

RNA and protein

DNA and no protein

DNA and histone proteins.

None of these

Answer

Correct Answer: DNA and histone proteins.

Note: This Question is unanswered, help us to find answer for this one

C4 plants conserve water by ______

Shuttling CO2 from the Calvin cycle to the water-splitting photosystem

Growing very deep roots

Incorporating CO2 into RuBP

Keeping their stomata closed when the weather is hot and dry

Answer

Correct Answer: Keeping their stomata closed when the weather is hot and dry

Note: This Question is unanswered, help us to find answer for this one

Before photosynthesis evolved, ________ was rare in earth's atmosphere.

CO2

H2O

None of these

Answer

Correct Answer: O2

Note: This Question is unanswered, help us to find answer for this one

Spermiogenesis begins with a and ends with a .

Primary spermatocyte, secondary spermatocyte

Spermatid, sperm

Sperm, spermatid

Spermatogonium, spermatid

Answer

Correct Answer: Spermatid, sperm

Note: This Question is unanswered, help us to find answer for this one

The hypothesis that proton motive force drives atp synthesis is called the __________ hypothesis.

Chemiosmotic

Oxidative

Substrate-level

Conformational change

Answer

Correct Answer: Chemiosmotic

Note: This Question is unanswered, help us to find answer for this one

When the cyclin?cdk complex phosphorylates rb, the cell cycle progresses from _ to _.

G1 phase; G2 phase

G2 phase; prophase

G1 phase; S phase

S phase; prophase

Answer

Correct Answer: G1 phase; S phase

Note: This Question is unanswered, help us to find answer for this one

When proteins undergo deamination, the waste substance found in the urine is mostly ________.

Ammonia.

Ketone bodies.

Urea.

Acetyl CoA

Answer

Correct Answer: Urea.

Note: This Question is unanswered, help us to find answer for this one

After a period of prolonged fasting (starving), the brain changes its fuel requirements ________.

Occurs in the mitochondria of the cell and is irreversible

Metabolism

So that more ketone bodies and less glucose are used for fuel

None of these

Answer

Correct Answer: So that more ketone bodies and less glucose are used for fuel

Note: This Question is unanswered, help us to find answer for this one

Many proto-oncogenes regulate ______.

Cell repair

Cell division

Cell growth

Cell suicide

Answer

Correct Answer: Cell division

Note: This Question is unanswered, help us to find answer for this one

The term binary fission is best applied to _____.

Nuclear chemistry

Plants

Prokaryotes

Mitosis

Chromosomes

Answer

Correct Answer: Prokaryotes

Note: This Question is unanswered, help us to find answer for this one

The spindle apparatus disintegrates during _____.

Telophase of mitosis

Spindle Fibers

Sperm cell

Production of gametes

Answer

Correct Answer: Telophase of mitosis

Note: This Question is unanswered, help us to find answer for this one

The movement of h+ through the atp synthase is best described as an example of ______.

Hydrolysis

Facilitated diffusion

Simple diffusion

Active transport

Answer

Correct Answer: Facilitated diffusion

Note: This Question is unanswered, help us to find answer for this one

The carbon atoms in cellulose found in a log originally came from _____ absorbed by the plant.

Carbon dioxide

Disorder

Diffusion of water

None of these

Answer

Correct Answer: Carbon dioxide

Note: This Question is unanswered, help us to find answer for this one

The _ chromosomes in a human cell from inside the cheek are found in the _.

46; cytoplasm

23; nucleus

24 cytoplasm

46, nucleus

22; nucleus

Answer

Correct Answer: 24 cytoplasm

Note: This Question is unanswered, help us to find answer for this one

The _____ allows citizens to register to vote when applying for or renewing their driver's license.

46; nucleus

50; nucleus

Both

None of these

Answer

Correct Answer: 46; nucleus

Note: This Question is unanswered, help us to find answer for this one

Sperm are the only human cells to have _____.

Flagella

Cristae

Lysosome

None of these

Answer

Correct Answer: Flagella

Note: This Question is unanswered, help us to find answer for this one

Somatic cells in animals differ from gametes in that somatic cells __________.

Are all of the cells of the body except for the gametes and their precursors

Homologous chromosomes

Re products of the S phase of the cell cycle and are two copies of one chromosome

Even though he never read any of Gregor Mendel's work

Answer

Correct Answer: Are all of the cells of the body except for the gametes and their precursors

Note: This Question is unanswered, help us to find answer for this one

Sister chromatids are __________.

Are identical copies of each other formed through DNA synthesis

Its cells have a single set of chromosomes

Multiplication of body cells

Gametes never resemble spores morphologically

Answer

Correct Answer: Are identical copies of each other formed through DNA synthesis

Note: This Question is unanswered, help us to find answer for this one

Sharks are a type of ______.

Agnathan

Cartilaginous fish

Tunicate

Lungfish

Answer

Correct Answer: Cartilaginous fish

Note: This Question is unanswered, help us to find answer for this one

Plant cells ______.

Do not need chloroplasts because their mitochondria meet their energy needs

Have chloroplasts and mitochondria

Use carbon dioxide but do not use oxygen

Do not need mitochondria because their chloroplasts meet their energy need

Answer

Correct Answer: Have chloroplasts and mitochondria

Note: This Question is unanswered, help us to find answer for this one

Plant and animal cells both have _____.

Cytoplasm

A plasma membrane

A nucleus

Vacuoles

All of these

Answer

Correct Answer: All of these

Note: This Question is unanswered, help us to find answer for this one

Nucleoli are present during _____.

Metaphase

Anaphase

Interphase

Prometaphase

Prophase

Answer

Correct Answer: Interphase

Note: This Question is unanswered, help us to find answer for this one

Microrna (mirna) controls _____.

Spinal cord injuries

Translation

Blastocysts

Answer

Correct Answer: Translation

Note: This Question is unanswered, help us to find answer for this one

Microfilaments are composed of blank in blank arrangement.

Repeating actin subunits; a thin double-helix

Dynamic; polymerize

Depolymerization; polymerization

Myosin; actin filaments

Answer

Correct Answer: Repeating actin subunits; a thin double-helix

Note: This Question is unanswered, help us to find answer for this one

Lungs are to breathing as _____ are to cellular respiration

Loses

Oxygen gains

Mitochondria

Answer

Correct Answer: Mitochondria

Note: This Question is unanswered, help us to find answer for this one

Integrins are integral membrane proteins. they are often attached to _____.

A small cell lived inside a larger cell to the benefit of both cells.

Cytoskeletal proteins and proteins in the extracellular matrix

In the epithelium of an animal’s stomach

Cell wall composition

Answer

Correct Answer: Cytoskeletal proteins and proteins in the extracellular matrix

Note: This Question is unanswered, help us to find answer for this one

In the equation shown below, during cellular respiration _ is oxidized and _ is reduced.

ATP ... oxygen

Oxygen ... ATP

Carbon dioxide ... water

Glucose ... oxygen

Answer

Correct Answer: Glucose ... oxygen

Note: This Question is unanswered, help us to find answer for this one

In photosynthesis, an h+ ion gradient forms across the ______.

Thylakoid membrane

Outer chloroplast membrane

Endomembrane

Inner chloroplast membrane

Answer

Correct Answer: Thylakoid membrane

Note: This Question is unanswered, help us to find answer for this one

In muscle cells, fermentation produces _____.

Carbon dioxide, ethanol, and NAD+

Pyruvate

Lactate and NAD+

Carbon dioxide, ethanol, NADH, and ATP

Answer

Correct Answer: Lactate and NAD+

Note: This Question is unanswered, help us to find answer for this one

In meiosis ii, _____.

Typically produces four cells

Typically produces two cells

Typically produces five cells

Answer

Correct Answer: Typically produces four cells

Note: This Question is unanswered, help us to find answer for this one

In anaphase i, __________.

Sister chromatids separate and migrate toward opposite poles., This occurs during anaphase II of meiosis and during anaphase in mitosis.

Homologous chromosomes move toward opposite poles, Meiosis I serves to separate homologous chromosomes so that each daughter cell ends up with just one set of chromosomes.

Produces offspring genetically identical to the parent, produces offspring genetically identical to the parent

Homologous chromosomes separate and migrate toward opposite poles, Homologous chromosomes do separate during anaphase I of meiosis.

Answer

Correct Answer: Homologous chromosomes separate and migrate toward opposite poles, Homologous chromosomes do separate during anaphase I of meiosis.

Note: This Question is unanswered, help us to find answer for this one

When the m phase begins during the cell cycle, it starts with _____.

Metaphase

Anaphase

Telophase

Prophase

Answer

Correct Answer: Prophase

Note: This Question is unanswered, help us to find answer for this one

The goal of _______ is to use cells and tissues to treat human illnesses or injuries

Therapeutic cloning

Clone therapy

Gene therapy

Reproductive cloning

Answer

Correct Answer: Therapeutic cloning

Note: This Question is unanswered, help us to find answer for this one

Regulatory transcription factors _____.

Are modulated

Effector molecule- such as a hormone

Protein-protein interactions- homodimer

Covalent- ex. phosphorylation

All of the above

Answer

Correct Answer: All of the above

Note: This Question is unanswered, help us to find answer for this one

The light-dependent reactions synthesize nadph and oxygen using _________ process(es).

Oxidation

Reduction

Both A & B

Answer

Correct Answer: Both A & B

Note: This Question is unanswered, help us to find answer for this one

The reactions of fermentation function to produce _____ molecules for use in glycolysis.

Yruvic acid

ATP

NAD

NADH

Glucose

Answer

Correct Answer: NAD

Note: This Question is unanswered, help us to find answer for this one

The light reactions of photosynthesis include __________.

The stroma

Reduction of NADP+

The Calvin cycle

Reduction of CO2

NADPH recycling

Answer

Correct Answer: Reduction of NADP+

Note: This Question is unanswered, help us to find answer for this one

The light reactions harvest _, while the carbon reactions produce _.

Energy, nucleic acids

Energy, phosphate

Energy, carbohydrates

Lipids, nucleic acids

Phosphate, carbohydrate

Answer

Correct Answer: Energy, carbohydrates

Note: This Question is unanswered, help us to find answer for this one

The common pathway for the oxidation of glucose and fatty acids is ________.

Glycolysis

The Cori cycle

The citric acid cycle

Ketosis

Answer

Correct Answer: The citric acid cycle

Note: This Question is unanswered, help us to find answer for this one

Most of the co2 from the catabolism of glucose is released during _____.

Glycolysis

Electron transport.

Chemiosmosis.

The citric acid cycle

Answer

Correct Answer: The citric acid cycle

Note: This Question is unanswered, help us to find answer for this one

If the interior of the thylakoid were not a sealed compartment ________.

The proton gradient could not be maintained

The products have more total energy than the reactants

The reaction proceeds with a net release of free energy

The reactions are nonspontaneous

Answer

Correct Answer: The proton gradient could not be maintained

Note: This Question is unanswered, help us to find answer for this one

Glucose is stored in plants as _ and in animals as _.

Glycogen; starch

Starch; glycogen

Cellulose; starch

Starch; cellulose

Cellulose; glycogen

Answer

Correct Answer: Starch; glycogen

Note: This Question is unanswered, help us to find answer for this one

For each glucose that enters glycolysis, _____ acetyl coa enter the citric acid cycle.

Answer

Correct Answer: 2

Note: This Question is unanswered, help us to find answer for this one

Energy is used as the cell converts ____________ to adp at the beginning of glycolysis.

ATP

Aerobic

Hydrolysis

Cellular respiration

Answer

Correct Answer: ATP

Note: This Question is unanswered, help us to find answer for this one

Each nadh that enters the electron transport system gives rise to _____ atp.

Answer

Correct Answer: 3

Note: This Question is unanswered, help us to find answer for this one

During the metabolism of glucose, carbon dioxide (co2) is produced during the _______ reactions.

Dehydration synthesis

Aerobic

Hydrolysis

Cellular respiration

Answer

Correct Answer: Aerobic

Note: This Question is unanswered, help us to find answer for this one

Chlorophyll may be found in __________ of a prokaryotic cell.

Infoldings of the plasma membrane

Mitochondria

The cytoplasm

Chloroplasts

Answer

Correct Answer: Infoldings of the plasma membrane

Note: This Question is unanswered, help us to find answer for this one

Bacteria typically have _, whereas eukaryotes have _.

One chromosome that is circular; many chromosomes that are linear

Several chromosomes that are circular; many chromosomes that are linear

One chromosome that is linear; many chromosomes that are circular

Two chromosomes that are circular; eight chromosomes that are linear

None of the above

Answer

Correct Answer: One chromosome that is circular; many chromosomes that are linear

Note: This Question is unanswered, help us to find answer for this one

Asexual reproduction _____. see concept 13.1

Produces offspring genetically identical to the parent

Produces offspring genetically different from the parent

Both A & B

Answer

Correct Answer: Produces offspring genetically identical to the parent

Note: This Question is unanswered, help us to find answer for this one

Any molecule that serves as an electron acceptor will be __________.

Reduced

Aerobic

Hydrolysis

Cellular respiration

Answer

Correct Answer: Reduced

Note: This Question is unanswered, help us to find answer for this one

All of the following are required for the generation of atp by chemiosmosis except __________.

Use of proton flow by ATP synthase.

Conversion of pyruvic acid to lactic acid.

Passage of electrons through electron carrier chains.

Active transport of protons across a phospholipid membrane,

Formation of a proton motive force

Answer

Correct Answer: Conversion of pyruvic acid to lactic acid.

Note: This Question is unanswered, help us to find answer for this one

All of the following are potential end-products of fermentation except __________.

Lactic acid

Ethanol

Carbon dioxide

Acetic acid

Pyruvic acid

Answer

Correct Answer: Pyruvic acid

Note: This Question is unanswered, help us to find answer for this one

A molecule that functions as the electron donor in a redox reaction _____.

Loses electrons and loses energy

Loses electrons and gains energy

Gains electrons and loses energy

Gains electron and gains energy

Answer

Correct Answer: Loses electrons and loses energy

Note: This Question is unanswered, help us to find answer for this one

A typical prokaryotic cell __________________ compared to a eukaryotic cell.

Is smaller in size by a factor of 100

Is similar in size

Is smaller in size by a factor of one million

Is larger in size by a factor of 10

Answer

Correct Answer: Is smaller in size by a factor of 100

Note: This Question is unanswered, help us to find answer for this one

Cellular respiration does not produce _____.

Glucose

Water

ATP

Carbon dioxide

Answer

Correct Answer: ATP

Note: This Question is unanswered, help us to find answer for this one

A cleavage furrow is _____

A ring of vesicles forming a cell plate

The separation of divided prokaryotes

A groove in the plasma membrane between daughter nuclei

The space that is created between two chromatids during anaphase

Answer

Correct Answer: A groove in the plasma membrane between daughter nuclei

Note: This Question is unanswered, help us to find answer for this one

Glycolysis occurs in almost all organisms on earth. from this we might conclude that __________.

Glycolysis evolved very early in ancestors that are common to all the domains of life.

Reduce NAD+ to NADH, which then delivers them to the electron transport chain

Results in a conformational change to each protein

Requires binding of a hormone to an intracellular receptor

Answer

Correct Answer: Glycolysis evolved very early in ancestors that are common to all the domains of life.

Note: This Question is unanswered, help us to find answer for this one

Glycolysis is a series of _ reactions that occurs in the ___ of cells.

Ten; cytoplasm

Ten; mitochondria

Fifteen; cytoplasm

Fifteen; mitochondria

Answer

Correct Answer: Ten; cytoplasm

Note: This Question is unanswered, help us to find answer for this one

Glyceraldehyde-3-phosphate dehydrogenase oxidizes _____.

An alcohol to a ketone

A carboxylic acid to CO2

An alcohol to an aldehyde

An aldehyde to a carboxylic acid

An aldehyde to an alcohol

Answer

Correct Answer: An aldehyde to a carboxylic acid

Note: This Question is unanswered, help us to find answer for this one

During _____ both the contents of the nucleus and the cytoplasm are divided.

Mitosis

The mitotic phase

Answer

Correct Answer: The mitotic phase

Note: This Question is unanswered, help us to find answer for this one

Cell-mediated immunity is to t cells as antibody-mediated immunity is to ___________.

B cells

T cells

None of the above

Answer

Correct Answer: B cells

Note: This Question is unanswered, help us to find answer for this one

Cell size is limited because ________ is critical to a cell's function.

The number of microvilli

The size of the nucleus

Apoptosis

Surface area to volume ratio

Answer

Correct Answer: Surface area to volume ratio

Note: This Question is unanswered, help us to find answer for this one

The and have a long period of sensitivity to teratogens.

Brain; eyes

Prokaryotic; eukaryotic

Eukaryotic; Prokaryotic

Answer

Correct Answer: Brain; eyes

Note: This Question is unanswered, help us to find answer for this one

In general, a signal transmitted via phosphorylation of a series of proteins _____.

Activates a transcription event

Generates ATP in the process of signal transduction

Results in a conformational change to each protein

Requires binding of a hormone to an intracellular receptor

Answer

Correct Answer: Results in a conformational change to each protein

Note: This Question is unanswered, help us to find answer for this one

When the separate chromosomes are being pulled from one place to another? This animation illustrates the events of _____.

Anaphase

Nucleus

Ribosome

Membrane

Answer

Correct Answer: Anaphase

Note: This Question is unanswered, help us to find answer for this one

The spherical object within a cell that controls its activity is the _____.

Mitochondria

Nucleus

Ribosome

Membrane

Answer

Correct Answer: Nucleus

Note: This Question is unanswered, help us to find answer for this one

The process of random movement of molecules toward a state of equilibrium is called _______.

Diffusion

Plasmid

RNA strand

Ribosome

Nucleoid

Answer

Correct Answer: Diffusion

Note: This Question is unanswered, help us to find answer for this one

The nucleus is to eukaryotes as the ________ is to prokaryotes.

Plasmid

RNA strand

Ribosome

Nucleoid

Nucleolus

Answer

Correct Answer: Nucleoid

Note: This Question is unanswered, help us to find answer for this one

The evolution of eukaryotic cells most likely involved _____

Endosymbiosis of an aerobic bacterium in a larger host cell-the endosymbiont evolved into mitochondria.

Anaerobie archaea taking up residence inside a larger bacterial host cell to escape toxic oxygen the anaerobic bacterium evolved into chloroplasts.

An endosymbiotic fungal cell evolved into the nucleus.

Acquisition of an endomembrane system, and subsequent evolution of mitochondria from a portion of the Golgi

Answer

Correct Answer: Endosymbiosis of an aerobic bacterium in a larger host cell-the endosymbiont evolved into mitochondria.

Note: This Question is unanswered, help us to find answer for this one

The enzyme in the animation is most likely catalyzing _____.

An anabolic reaction.

An endothermic reaction.

A hydrolysis reaction.

Feedback inhibition.

A catabolic reaction

Answer

Correct Answer: An anabolic reaction.

Note: This Question is unanswered, help us to find answer for this one

The energy production per glucose molecule through the citric acid cycle is _____.

2 ATP

6 NADH

2 FADH2

All of the above

Answer

Correct Answer: All of the above

Note: This Question is unanswered, help us to find answer for this one

The energy for an endergonic reaction comes from a(n) _____ reaction.

Synthesis

Glucose + glucose --> maltose

ADP + P --> ATP

Exergonic

Anabolic

Answer

Correct Answer: Exergonic

Note: This Question is unanswered, help us to find answer for this one

The electron transport chain _____.

Is a series of substitution reactions

Is driven by ATP consumption

Is a series of redox reactions

Takes place in the cytoplasm of prokaryotic cells

Answer

Correct Answer: Is a series of redox reactions

Note: This Question is unanswered, help us to find answer for this one

The cell plate is formed during _____.

Metaphase

Prophase

Telophase

Anaphase

Answer

Correct Answer: Telophase

Note: This Question is unanswered, help us to find answer for this one

Regulatory secretion of hormones would be associated with ________ at the transface of the golgi.

Microsomes

Non-clathrin vesicles

Lysosomes

Endosomes

Clathrin-coated vesicles

Answer

Correct Answer: Clathrin-coated vesicles

Note: This Question is unanswered, help us to find answer for this one

Proto-oncogenes are growth regulators that cell proliferation.

Positive; activate

Negative; deactivate

Positive; deactivate

Negative; activate

Answer

Correct Answer: Positive; activate

Note: This Question is unanswered, help us to find answer for this one

Epinephrine acts as a signal molecule that attaches to _____ proteins.

Ion-channel receptor

Nuclear receptor

G-protein-linked receptor

Receptor tyrosine kinase

Intracellular receptor

Answer

Correct Answer: G-protein-linked receptor

Note: This Question is unanswered, help us to find answer for this one

Beginning within the nucleus, the first step leading to the synthesis of a polypeptide is ____

Transferring of information from DNA to messenger RNA

Larger molecules or structures are built from smaller ones

Structural proteins are used as a potential energy source

Ketone bodies are formed

Answer

Correct Answer: Transferring of information from DNA to messenger RNA

Note: This Question is unanswered, help us to find answer for this one

Before a cell can enter mitosis, it must first pass through ________.

S phase

M phase

G2 phase

Answer

Correct Answer: S phase

Note: This Question is unanswered, help us to find answer for this one

Anabolism includes reactions in which ________.

Carbohydrate utilization increases

Larger molecules or structures are built from smaller ones

Structural proteins are used as a potential energy source

Ketone bodies are formed

Answer

Correct Answer: Larger molecules or structures are built from smaller ones

Note: This Question is unanswered, help us to find answer for this one

_____ is an inflammation of both the renal pelvis and of the kidney.

Pyelonephritis

Nocturia

Urethrostenosis

Interstitial cystitis

Answer

Correct Answer: Pyelonephritis

Note: This Question is unanswered, help us to find answer for this one

During cell division, ___________ move the chromosomes.

Mitochondria

Microtubules

Microfilaments

Solvent

Answer

Correct Answer: Microtubules

Note: This Question is unanswered, help us to find answer for this one

During binary fission in a bacterium, __________.

Origins of replication move apart

A small daughter cell buds from a large parent cell

Chromosomes are separated through attachment to a mitotic spindle

Genetic material is acquired from another bacterium

The nuclear envelope fragments

Answer

Correct Answer: Origins of replication move apart

Note: This Question is unanswered, help us to find answer for this one

A(n) _____ reaction occurs spontaneously

Anabolic

Kinetic

Exergonic

Chemical

Endergonic

Answer

Correct Answer: Exergonic

Note: This Question is unanswered, help us to find answer for this one

A benign tumor is a condition in which tumor cells __________.

Its entire genetic legacy can remain intact

It produces four haploid cells and allows exchange of genetic material between homologous chromosomes.

Is a criterion for distinguishing living things from nonliving matter

Remain confined to their original site; The spread of cancer cells to new locations is called metastasis

Answer

Correct Answer: Remain confined to their original site; The spread of cancer cells to new locations is called metastasis

Note: This Question is unanswered, help us to find answer for this one

_____ serves as an energy substrate for metabolism.

Essential fat

Storage fat

Skin fat

Organ fat

Answer

Correct Answer: Storage fat

Note: This Question is unanswered, help us to find answer for this one

Chemiosmotic atp synthesis (oxidative phosphorylation) occurs in _____.

All cells, but only in the presence of oxygen

Only eukaryotic cells, in the presence of oxygen

Only in mitochondria, using either oxygen or other electron nacceptors

All respiring cells, both prokaryotic and eukaryotic, using either oxygen or other electron acceptors

Answer

Correct Answer: All respiring cells, both prokaryotic and eukaryotic, using either oxygen or other electron acceptors

Note: This Question is unanswered, help us to find answer for this one

Cellular respiration is the ____________ of organic compounds to extract energy.

Hydrogen ions

Mitochondria

Decarboxylation

Oxidation

Answer

Correct Answer: Oxidation

Note: This Question is unanswered, help us to find answer for this one

After meiosis i ___ cells are formed and after meiosis ii, _ cells result.

1,2

2,3

2,4

4,5

Answer

Correct Answer: 2,4

Note: This Question is unanswered, help us to find answer for this one

A green pigment likely ____________ green light.

Blue

Rubisco

C4 plants

Reflects

Answer

Correct Answer: Reflects

Note: This Question is unanswered, help us to find answer for this one

Diabetes insipidus occurs when the _ lobe of the pituitary gland no longer releases _.

Posterior; ADH

Anterior, ADH

Posterior, ACTH

Anterior, ACTH

Answer

Correct Answer: Posterior; ADH

Note: This Question is unanswered, help us to find answer for this one

Compared to bronchi, bronchioles have __________.

Increase in BPG

As carbonic acid.

Respiratory zone.

More smooth muscle

Answer

Correct Answer: More smooth muscle

Note: This Question is unanswered, help us to find answer for this one

Closed circulatory systems _____.

Have capillaries

An insect

Right ventricle

Systole

Answer

Correct Answer: Have capillaries

Note: This Question is unanswered, help us to find answer for this one

Botulinum toxin causes muscle paralysis because ____________________.

Calcium is removed from the neuromuscular junction

Sodium is removed from the synaptic cleft

The acetylcholine receptors at the motor end-plate are blocked

No acetylcholine enters the synaptic cleft

Answer

Correct Answer: No acetylcholine enters the synaptic cleft

Note: This Question is unanswered, help us to find answer for this one

Because the conducting zone structures have no gas exchange function, they are called ________.

Alveoli

Inspiratory reserve volume

Conducting zone

Anatomical dead space

Answer

Correct Answer: Anatomical dead space

Note: This Question is unanswered, help us to find answer for this one

An increase in the size and strength of muscle tissues is called _____.

Shorten

Insertion

More, stronger

Hypertrophy

Answer

Correct Answer: Hypertrophy

Note: This Question is unanswered, help us to find answer for this one

Alpha cells are to as beta cells are to .

Pancreatic polypeptide; insulin

Somatostatin; insulin

Glucagon; somatostatin

Glucagon; insulin

Insulin; glucagon

Answer

Correct Answer: Glucagon; insulin

Note: This Question is unanswered, help us to find answer for this one

After ovulation, the corpus luteum releases _____ to prepare the endometrium for implantation.

LH.

FSH.

Progesterone and estrogen

All of these

Answer

Correct Answer: Progesterone and estrogen

Note: This Question is unanswered, help us to find answer for this one

A/an _____ is a localized balloon-like enlargement of an artery.

ACE Inhibitor

Atherectomy

Aneurysm

Anticoagulant

Answer

Correct Answer: Aneurysm

Note: This Question is unanswered, help us to find answer for this one

A soft callus forms during ___________.

Intramembranous ossification

Endochondral ossification

The remodeling of bone

The healing of a fracture

Bone growth at the metaphysis

Answer

Correct Answer: The healing of a fracture

Note: This Question is unanswered, help us to find answer for this one

A disorder of the hand that creates a flexion deformity of the fingers is known as ________.

Dupuytren's contracture

Abduction

Rotation

Back

Answer

Correct Answer: Dupuytren's contracture

Note: This Question is unanswered, help us to find answer for this one

A diagnostic procedure to evaluate joint mobility and muscle strength is known as _____.

Range-of-motion testing

Abduction

Hernia

Antispasmodic

Answer

Correct Answer: Range-of-motion testing

Note: This Question is unanswered, help us to find answer for this one

A dendrite conducts nerve impulses ___ the cell body

Toward

Away from

Neurons

Neuroglial

Answer

Correct Answer: Toward

Note: This Question is unanswered, help us to find answer for this one

A bundle of axons within a nerve is called a __________.

Nociceptors

Fascicles

Somatic

Flexion reflex

Answer

Correct Answer: Fascicles

Note: This Question is unanswered, help us to find answer for this one

______________ are chemical messengers secreted by t cells that aid cells to kill antigens.

Monoclonal antibodies

Macrophages

Immunoglobulins

Cytokines

Answer

Correct Answer: Cytokines

Note: This Question is unanswered, help us to find answer for this one

__________ is the bluish coloration of the skin that results from insufficient oxygen in the blood.

Cyanosis

Jaundice

Erythema

Pallor

Freckles

Answer

Correct Answer: Cyanosis

Note: This Question is unanswered, help us to find answer for this one

_______ axons conduct sensory information toward the brain.

Somatic Nervous Sytem

Efferent

Afferent

None of these

Answer

Correct Answer: Afferent

Note: This Question is unanswered, help us to find answer for this one

_____ is the weakness or wearing away of body tissues and structures.

Muscle Atrophy

Myoclonus

Kinesiology

Relaxation

Answer

Correct Answer: Muscle Atrophy

Note: This Question is unanswered, help us to find answer for this one

During ____, microtubules fasten the cell?s chromosomes to the spindle poles.

Prophase 1

Anaphase 2

Metaphase 1

Metaphase 2

Telophase 1

Answer

Correct Answer: Prophase 1

Note: This Question is unanswered, help us to find answer for this one

During _____ chromosomes align single file along the equator of a haploid cell

Anaphase II

Metaphase II

Anaphase I

Telophase II

Answer

Correct Answer: Metaphase II

Note: This Question is unanswered, help us to find answer for this one

During _____ a spindle forms in a haploid cell.

Prophase II

Anaphase I

Anaphase II

Prophase I

Answer

Correct Answer: Prophase II

Note: This Question is unanswered, help us to find answer for this one

_____ are the sites of protein synthesis.

Ribosomes

Lysosomes

Chloroplast

None of these

Answer

Correct Answer: Ribosomes

Note: This Question is unanswered, help us to find answer for this one

Reactions that require co2 take place in _____.

The light reactions alone

Both the light reactions and the Calvin cycle

The Calvin cycle alone

The chloroplast, but not as part of photosynthesis

Neither the light reactions nor the Calvin cycle

Answer

Correct Answer: The Calvin cycle alone

Note: This Question is unanswered, help us to find answer for this one

Both mitochondria and chloroplasts _____.

Release oxygen as a by-product

Obtain electrons from water

Reduce NAD+, forming NADP

Use an H+ gradient to produce ATP

Answer

Correct Answer: Use an H+ gradient to produce ATP

Note: This Question is unanswered, help us to find answer for this one

In meiosis, dna replicates _______ the nucleus divides.

A reproductive signal

One less time than

A tumor suppressor

None of these

Answer

Correct Answer: One less time than

Note: This Question is unanswered, help us to find answer for this one

Photorespiration _____.

Oxidative phosphorylation in cellular respiration

Generates carbon dioxide and consumes ATP and oxygen

Cyanobacteria using photosystem II

They use PEP carboxylase to initially fix CO2

Answer

Correct Answer: Generates carbon dioxide and consumes ATP and oxygen

Note: This Question is unanswered, help us to find answer for this one

Oxidative phosphorylation is to respiration as ________ is to photosynthesis.

Oxidative phosphorylation

The light-dependent reaction

The process of photosynthesis does not require the input of energy.

Light reactions of photosynthesis

Answer

Correct Answer: The light-dependent reaction

Note: This Question is unanswered, help us to find answer for this one

________ is the most abundant organic waste.

Sodium

Urea

Albumin

Carbon dioxide

Glucose

Answer

Correct Answer: Urea

Note: This Question is unanswered, help us to find answer for this one

The expressed (coding) regions of eukaryotic genes are called ________.

Caps.

Promoters.

Exons.

Introns

Answer

Correct Answer: Exons.

Note: This Question is unanswered, help us to find answer for this one

The light reactions of photosynthesis use _ and produce _.

Water & NADPH

NADPH reactant

Calvin cycle

None of these

Answer

Correct Answer: Water & NADPH

Note: This Question is unanswered, help us to find answer for this one

Mitosis occurs in _; meiosis occurs in _

Somatic or body cells … germ cells in the testes or ovaries

Germ cells in the testes or ovaries … somatic or body cells

Sexually reproducing organisms … asexually reproducing organisms

Adult organisms … zygotes and early embryos

Answer

Correct Answer: Somatic or body cells … germ cells in the testes or ovaries

Note: This Question is unanswered, help us to find answer for this one

Potential energy is to kinetic energy as __ is to _.

When one of its electrons is boosted to a higher-energy excited state upon being struck by a photon of light.

Within the stroma, outside of the thylakoid, but still inside the chloroplast.

Water held behind a dam, water power being used to turn electric turbines

Is contained in matter placed in certain positions or arrangements

Answer

Correct Answer: Water held behind a dam, water power being used to turn electric turbines

Note: This Question is unanswered, help us to find answer for this one

The following reaction a --> b + c + heat is a(n) _____ reaction.

Exergonic

Dehydration synthesis

Endergonic

Exchange

Anabolic

Answer

Correct Answer: Exergonic

Note: This Question is unanswered, help us to find answer for this one

The chemical energy stored in atp during photosynthesis is released during the dark phase to _____.

Produce O2

Produce CO2

Release energy for the

Produce a carbohydrate from CO2

Answer

Correct Answer: Produce a carbohydrate from CO2

Note: This Question is unanswered, help us to find answer for this one

One difference between mitosis and meiosis is ______.

Mitosis produces haploid cells, but meiosis produces diploid cells

Mitosis requires only one parent cell, but meiosis requires two parent cells

Mitosis produces more daughter cells than meiosis

Mitosis produces cells genetically identical to the parent cell, but meiosis does not

Meiosis is needed for growth and tissue repair, but mitosis is not

Answer

Correct Answer: Mitosis produces cells genetically identical to the parent cell, but meiosis does not

Note: This Question is unanswered, help us to find answer for this one

A cell replicates its entire chromosomal dna only __________.

Sexual reproduction

Chromosomes

Its about to divide

Genetic variation

Answer

Correct Answer: Its about to divide

Note: This Question is unanswered, help us to find answer for this one

Activation energy is necessary for all ________ reactions.

Exergonic

Endergonic

Coupled

Chemical

Answer

Correct Answer: Chemical

Note: This Question is unanswered, help us to find answer for this one

Fatty acid oxidation results in the direct production of ____.

Ketones

Fructose

Pyruvate

Acetyl coa

Lactate

Answer

Correct Answer: Acetyl coa

Note: This Question is unanswered, help us to find answer for this one

The breakdown of ____ into cellular energy can involve glycolysis.

Carbohydrates

fats

proteins

carbohydrates and fats

fats and proteins

Answer

Correct Answer: carbohydrates and fats

Note: This Question is unanswered, help us to find answer for this one

If you exceed your aerobic capacity during a workout, your muscle cells will __________.

Switch to anaerobic respiration and produce lactic acid

Send a signal to the respiratory system to increase your breathing rate

Stop getting energy until your breathing rate increases and more oxygen is delivered to your cells

Increase their capacity to absorb oxygen

Answer

Correct Answer: Switch to anaerobic respiration and produce lactic acid

Note: This Question is unanswered, help us to find answer for this one

If humans did not breathe in o2, we would not __________.

Are bound to NAD+ to be sent through electron transport

Make enough ATP to meet our energy requirements.

CO2 and NADH are formed

At the end of the electron transport chain to accept electrons and form H2O

Answer

Correct Answer: Make enough ATP to meet our energy requirements.

Note: This Question is unanswered, help us to find answer for this one

Without photosynthetic organisms, __________ could not exist.

Herbivores,

Carnivores that eat herbivores,

Omnivores

All of the above

Answer

Correct Answer: All of the above

Note: This Question is unanswered, help us to find answer for this one

When water molecules are disappearing into the air, there is a net _______..

Evaporation ..

Fission.

Reduction

Answer

Correct Answer: Evaporation ..

Note: This Question is unanswered, help us to find answer for this one

Various protozoa can divide several times, producing several daughter cells, by _____.

Multiple fission.

Single fission.

None

Answer

Correct Answer: Multiple fission.

Note: This Question is unanswered, help us to find answer for this one

The secondary structure of a protein includes ________.

Disulfide bridges

Alpha helix and Beta-pleated sheet

Alpha helix and gamma-pleated sheet

Delta helix and beta-pleated sheet

Answer

Correct Answer: Alpha helix and Beta-pleated sheet

Note: This Question is unanswered, help us to find answer for this one

The proteins that make up the cytoskeleton of bacteria are similar to _______ in eukaryotic cells.

Proteases

Sterols

Actin

Transcription factors

Answer

Correct Answer: Actin

Note: This Question is unanswered, help us to find answer for this one

The origin of the first living organisms is called ________.

Trigenesis

Biogenesis

Single genesis

Answer

Correct Answer: Biogenesis

Note: This Question is unanswered, help us to find answer for this one

The only invertebrates known to hear are _____.

Humans

Insects

Animal

Answer

Correct Answer: Insects

Note: This Question is unanswered, help us to find answer for this one

The nmda receptor is unusual in that it is -dependent and - dependent.

Voltage; neurotransmitter.

Current; neurotransmitter.

Voltage; neurontransmitter

Answer

Correct Answer: Voltage; neurotransmitter.

Note: This Question is unanswered, help us to find answer for this one

The following picture shows the cycle for the production of _______.

Soil

Igneous rocks (extrusive)

Water

Answer

Correct Answer: Soil

Note: This Question is unanswered, help us to find answer for this one

The first cavity formed during frog development is the _____

Blastopore

Mouth

Blastocoel

Anus

Answer

Correct Answer: Blastocoel

Note: This Question is unanswered, help us to find answer for this one

The correct chemistry term for the process of ""burning"" glucose is the ______ of glucose.

Oxidation

Reduction .

Hydration

Answer

Correct Answer: Oxidation

Note: This Question is unanswered, help us to find answer for this one

The choroid plexus ____

Forms the cerebrospinal fluid

Forms the thalamus

None

Answer

Correct Answer: Forms the cerebrospinal fluid

Note: This Question is unanswered, help us to find answer for this one

The chorion and amnion are ______________________________________

Is the outer protective membrane around the embryo; is the site where an embryo is implanted into the uterus

Projects into the endometrium and helps form the placenta; is a membrane that encircles a developing embryo

Is the site from which primary germ layers develop; is the site from which secondary germ layers develop

Is the part of the blastocyst that is not the inner cell mass; is the inner cell mass

Answer

Correct Answer: Projects into the endometrium and helps form the placenta; is a membrane that encircles a developing embryo

Note: This Question is unanswered, help us to find answer for this one

The atp synthase in a human cell gets energy for making atp directly from _____

The flow of H+ through a membrane

The flow of H through a membrane

The flow of H+ through a cell

Answer

Correct Answer: The flow of H+ through a membrane

Note: This Question is unanswered, help us to find answer for this one

The atp molecule shown consists of a base,__________, and a chain of three phosphates..

A ribose sugar.

A sugar,

None

Answer

Correct Answer: A ribose sugar.

Note: This Question is unanswered, help us to find answer for this one

The __________ is commonly used to identify aerobic microorganisms..

Oxidase test.

Oxide test.

Chemoautotroph

Answer

Correct Answer: Oxidase test.

Note: This Question is unanswered, help us to find answer for this one

The ________ helps keep food between the grinding surfaces of the teeth during chewing...

Buccinator.

Orbicularis oculi.

Masseter

Answer

Correct Answer: Buccinator.

Note: This Question is unanswered, help us to find answer for this one

Sodium permeability refers to a property of ________...

The cell membrane.

Cell wall..

Nucleus

Answer

Correct Answer: The cell membrane.

Note: This Question is unanswered, help us to find answer for this one

Replication of the bacterial ________ is required before the bacterial cell can be duplicated..

Chromosome

.cell cycle

Nucleus

Answer

Correct Answer: Chromosome

Note: This Question is unanswered, help us to find answer for this one

Prokaryotes are associated with important ecological functions such as _____.

Oil spill cleanup

Degradation of landfill contents

Nitrogen fixation

All of these

Answer

Correct Answer: All of these

Note: This Question is unanswered, help us to find answer for this one

Primarily, cellular respiration serves to _____..

Make ADP to power the cell's activities

Make ATP to power the cell's activities.

.make ATP to power the membrane activities

Answer

Correct Answer: Make ATP to power the cell's activities.

Note: This Question is unanswered, help us to find answer for this one

In amphibians, gases are exchanged through the gills, lungs, and/or _______________. ..

Skin..

Hair

Foot

Answer

Correct Answer: Skin..

Note: This Question is unanswered, help us to find answer for this one

During _________, nucleotide sequence information is changed into amino acid sequence information.

Promotor

Coding

Translation

Answer

Correct Answer: Translation

Note: This Question is unanswered, help us to find answer for this one

Denaturing gel electrophoresis separates proteins based on differences in _______.

Size and charge

Size and number

Number and charge

Answer

Correct Answer: Size and charge

Note: This Question is unanswered, help us to find answer for this one

Decomposers are most likely found in the ________.

A and O horizons

A and B horizons

B and O horizons

Answer

Correct Answer: A and O horizons

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Control of ______________ is a function of the autonomic nervous system.

Functioning of internal organs

Functioning of external organs

Both

Answer

Correct Answer: Functioning of internal organs

Note: This Question is unanswered, help us to find answer for this one

Cellular respiration is an example of __________.

Anaerobic process

Aerobic process

Axergonic Process

None

Answer

Correct Answer: Axergonic Process

Note: This Question is unanswered, help us to find answer for this one

Because the bacterial cell’s dna is not surrounded by a nuclear envelope, __________ occur(s).

Coupled transcription and translation

Nonsense

Ribozymes

Answer

Correct Answer: Coupled transcription and translation

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Because of their shape, muscle cells are also known as ________.

Muscle fibers

Myosin

Tendons

Answer

Correct Answer: Muscle fibers

Note: This Question is unanswered, help us to find answer for this one

Bacterial cells are prokaryotic. unlike a typical eukaryotic cell they __________.

Lack of a plasma membrane

Do not have a nucleus

Have RNA, not DNA

All of the above

Answer

Correct Answer: All of the above

Note: This Question is unanswered, help us to find answer for this one

Bacteria are especially important in making _____ available to plants.

Hydrogen.

Oxgen.

Nitrogen.

Caron

Answer

Correct Answer: Nitrogen.

Note: This Question is unanswered, help us to find answer for this one

Atp synthase plays a role in ________.

Pulling electrons down the electron transport chain.

Glycolysis.

Pumping hydrogen ions across the inner

Generatin the atp

Answer

Correct Answer: Generatin the atp

Note: This Question is unanswered, help us to find answer for this one

Atp contains a large amount of energy because _____.

Captures energy from sunlight

It receives energy from mitochondria

It receives a phosphate group from ADP

It has high-energy phosphate bonds

Answer

Correct Answer: It has high-energy phosphate bonds

Note: This Question is unanswered, help us to find answer for this one

At some time during their life cycles, bryophytes make _____.

Sporangia

Microphylls

True roots

True leaves

Answer

Correct Answer: Sporangia

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As the glomerular filtrate is formed, it flows from the bowman's capsule into the __________.

Descending limb of the loop of Henle

Proximal convoluted tubule

Connecting tubule

Distal convoluted tubule

Answer

Correct Answer: Proximal convoluted tubule

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Arthropod exoskeletons and mollusc shells both ________.

Help retain moisture in terrestrial habitats

Are comprised of the polysaccharide chitin

Are secreted by the mantle

Completely replace the hydrostatic skeleton

Answer

Correct Answer: Help retain moisture in terrestrial habitats

Note: This Question is unanswered, help us to find answer for this one

Archaea that "eat" methane are considered to be _____.

Archaea and Bacteria .

Archaea and fungus .

Funus and Alea

Answer

Correct Answer: Archaea and Bacteria .

Note: This Question is unanswered, help us to find answer for this one

Archaea and eubacteria are primarily different in _____.

Genetic make-up

Biochemistry size shape

Method of reproduction

Symbiotic relationships.

All

Answer

Correct Answer: All

Note: This Question is unanswered, help us to find answer for this one

Animals such as earthworms and millipedes which feed on dead organic matter are ________.

Decomposers

Carnivores.

Herbivores.

Producers

Answer

Correct Answer: Decomposers

Note: This Question is unanswered, help us to find answer for this one

Animals meet their energy needs by combining glucose with _____.

Oxygen

Nitrogen

Hydrogen

Carbon

Answer

Correct Answer: Oxygen

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Analogous structures _____.

Whale pelvic bone

Bat wing

Pharyngeal pouch

Parathyroid gland

Answer

Correct Answer: Whale pelvic bone

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Anaerobic respiration produces a maximum of ______ atp per glucose

Answer

Correct Answer: 38

Note: This Question is unanswered, help us to find answer for this one

An upward closing fold is called a/an _____.

Anticline

Syncline

Gigapan

Answer

Correct Answer: Anticline

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An organism that cannot synthesize methionine is an example of __________.

. an auxotroph.

A prototroph.

A mutant.

An autotroph.

Answer

Correct Answer: An autotroph.

Note: This Question is unanswered, help us to find answer for this one

An observation is _______

A possible explanation for events using prior knowledge

Always quantitative

Made using any of the five senses

Always qualitative

Answer

Correct Answer: Made using any of the five senses

Note: This Question is unanswered, help us to find answer for this one

An iso-osmotic solution is about _________________ mosm

100

200

300

400

Answer

Correct Answer: 300

Note: This Question is unanswered, help us to find answer for this one

An individual who is homozygous ______.

Cannot have children with cystic fibrosis

Is a carrier

Will have children who are all carriers of cystic fibrosis

Has cystic fibrosis

Answer

Correct Answer: Is a carrier

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An important aspect of transport by facilitated transporters and pumps is ________.

Conformational shifts

Rigidity

Transmembrane segments

Depolarized

Answer

Correct Answer: Conformational shifts

Note: This Question is unanswered, help us to find answer for this one

An f+ bacterial cell __________.

Gram-positive bacteria have thicker cell walls.

Acts as a donor during conjugation.

Gram-negative bacteria are surrounded by a thin peptidoglycan cell

Answer

Correct Answer: Acts as a donor during conjugation.

Note: This Question is unanswered, help us to find answer for this one

An experiment ________.

A scientific procedure undertaken to make a discovery

Test a hypothesis

Demonstrate a known fact

ALL

Answer

Correct Answer: ALL

Note: This Question is unanswered, help us to find answer for this one

An example of nondisjunction in autosomes is ____________ , also called down syndrome.

Trisomy 21

Chromosome 21

Trisomy 20

Chromosome 20

Answer

Correct Answer: Trisomy 21

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An aerobic process requires ______.

Oxygen

Carbon dioxide

ATP

Carbohydrates

Answer

Correct Answer: Oxygen

Note: This Question is unanswered, help us to find answer for this one

Amoeba use _________ to move and ingest prey.

Pseudopod

Cilia

Flagella

Answer

Correct Answer: Pseudopod

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Amino acids and glucose enter cells by ________.

Through facilitated effusion.

Through diffusion.

Through facilitated diffusion.

Through effusion

Answer

Correct Answer: Through facilitated diffusion.

Note: This Question is unanswered, help us to find answer for this one

Allosteric enzyme regulation is usually associated with _____.

Feedback inhibition

Activating activity

An enzyme with more than one subunit

The need for cofactors

Answer

Correct Answer: An enzyme with more than one subunit

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Alleles are described as ______

Homologous chromosomes

Environmental factors that affect gene expression

Alternate versions of a gene

Alternate phenotypes

Answer

Correct Answer: Alternate versions of a gene

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All types of muscle tissue have _____.

Interactions between actin and myosin

Cells that lengthen when appropriately stimulated

Striated banding patterns seen under the microscope

A response that can be consciously controlled

Answer

Correct Answer: Interactions between actin and myosin

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All of the following are organs except __________.

Heart

Kidneys

Lungs

Epidermal

Answer

Correct Answer: Epidermal

Note: This Question is unanswered, help us to find answer for this one

Algal bloom is an example of ______.

Eutrophication

Kelp forest.

Marine bloom

Answer

Correct Answer: Eutrophication

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After meiosis i, the number of chromosomes is _______ that of a somatic cell.

One

Half

Two

Three

Answer

Correct Answer: Half

Note: This Question is unanswered, help us to find answer for this one

After an amphibian hatches from an egg they begin life as a _____.

Frog

Adpole or larvae

Salamander

Embryo

Answer

Correct Answer: Adpole or larvae

Note: This Question is unanswered, help us to find answer for this one

Aerobic cellular respiration yields about ____ of the energy of glucose in atp molecules.

15%

28%

39%

Answer

Correct Answer: 39%

Note: This Question is unanswered, help us to find answer for this one

Aerobes use ____ as the final electron acceptor in electron transport phosphorylation.

Oxygen

Hydroen

Carbon

Nitrogen

Answer

Correct Answer: Oxygen

Note: This Question is unanswered, help us to find answer for this one

Active transport of molecules across membranes requires atp because __________.

The transport protein moves or has moving gates

The transported molecules are not soluble in the lipid membrane

The molecules are moved against the concentration gradient (uphill)

More than one molecule is transported at a time

Answer

Correct Answer: The molecules are moved against the concentration gradient (uphill)

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According to the pressure-flow hypothesis of phloem transport, _____.

The combination of a high turgor pressure in the source and transpiration water loss from the sink moves solutes through phloem conduits.

Water is actively transported into the source region of the phloem to create the turgor pressure needed.

Solute moves from a high concentration in the source to a lower concentration in the sink.

The formation of starch from sugar in the sink increases the osmotic concentration

Answer

Correct Answer: Solute moves from a high concentration in the source to a lower concentration in the sink.

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A typical somatic cell has all of the following parts except __________.

A single amino acid

Interstitial fluid

Microtubules

Answer

Correct Answer: Interstitial fluid

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A sperm and egg are each _. they fuse during fertilization to produce a _ cell.

Haploid; diploid

Diploid; haploid

Diploid; sporophyte

Answer

Correct Answer: Haploid; diploid

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A sorting device that is useful in classifying by observation is a _____.

Dichotomy

Wedge

Taxon

Key

Answer

Correct Answer: Key

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A solution that is hypotonic to cytoplasm has __________.

A solute concentration lower than that of the cytoplasm

A solute concentration that is equal to that of the cytoplasm

A solute concentration higher than that of the cytoplasm

An osmotic concentration higher than that of the intracellular fluid

Answer

Correct Answer: A solute concentration lower than that of the cytoplasm

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A solution should be _____ in order to prevent water gain or water loss in a cell.

Hypotonic

Hypertonic

Isotonic

Answer

Correct Answer: Isotonic

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A small population that inbreeds may ________.

Be drawn into an extinction vortex

Is in danger of extinction

Beneficial in the atmosphere

Answer

Correct Answer: Be drawn into an extinction vortex

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A single allele that controls more than one character is said to be _____.

Autotrophic.

Polygenic.

Pleiotropic.

Linked.

Answer

Correct Answer: Pleiotropic.

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A signal molecule is also known as a(n) _____.

Protein

Ligand

Key

Initiator

Answer

Correct Answer: Ligand

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A recessive trait will be observed in individuals that are ________ for that trait.

Heterozygous

Homozygous or heterozygous

Homozygous

Diploid

Answer

Correct Answer: Homozygous

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A protist that contains contractile vacuoles most likely lives ______.

In pond water

In river water

In fresh water

In lake water

Answer

Correct Answer: In fresh water

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A process is referred to as aerobic if it requires ________.

Hydrogen

Carbon

Oxygen

Answer

Correct Answer: Oxygen

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A phospholipid is a _____

Polar lipid molecule

Bipolar lipid molecule

Nonpolar lipid molecule

Answer

Correct Answer: Nonpolar lipid molecule

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A neuron sends a signal toward another neuron along its _____.

Sensory neuron

Nerve cell

Axon

Answer

Correct Answer: Axon

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A muscle cell deprived of molecular oxygen will convert glucose to lactic acid to __________.

Recycle NAD+ through fermentation

Recycle NADH through fermentation

Recycle NAD through fermentation

Answer

Correct Answer: Recycle NADH through fermentation

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A molecule that is _ loses electrons, and a molecule that is _ gains electrons.

Reduce:oxidized

Oxidized; reduced

Oxidized; dehydrate

Answer

Correct Answer: Oxidized; reduced

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A higher concentration of molecules causes a faster chemical reaction. this is known as _____

Chemical reaction

Concentration

Chemical equilibrium

Answer

Correct Answer: Chemical equilibrium

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A good working definition of life does not need to incorporate that living things ________.

Are capable of reproduction

Contain carbon in their chemical makeup

Can change through time

Can capture, store, and transmit energy

Can adapt to their environment

Answer

Correct Answer: Contain carbon in their chemical makeup

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A cell with a predominance of smooth endoplasmic reticulum is likely specialized to ________.

Store large quantities of water

Import and export large quantities of protein

Actively secrete large quantities of protein

Synthesize large quantities of lipids

Answer

Correct Answer: Synthesize large quantities of lipids

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A cell in a hypertonic solution _. the result of this will be __.

. will take up water; a decrease in the molar concentration of all solutes in the cell

Will decrease in volume; an increase in the molar concentration of all solutes in the cell

Maintains its volume; a higher concentration of total solutes in the cell than in the external medium

. will decrease in volume; a lower concentration of each solute in the cell than in the external medium

Answer

Correct Answer: Will decrease in volume; an increase in the molar concentration of all solutes in the cell

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A 2-carbon group from ____________ enters the cycle.

Acetyl-CoA

Succinyl-CoA

FAD

Oxaloacetate

Answer

Correct Answer: Acetyl-CoA

Note: This Question is unanswered, help us to find answer for this one

happens in the cytoplasm, whereas happens in the mitochondrion.

Glycolysis; the citric acid (Krebs) cycle

Glucose; the citric acid (Krebs) cycle

Glycolysis; the acetic acid (Krebs) cycle

Answer

Correct Answer: Glycolysis; the citric acid (Krebs) cycle

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__________ constitute(s) the ""assembly line"" of the manufacturing plant.

Ribosomes

Lysosomes

Mitochondria

Answer

Correct Answer: Ribosomes

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The cytoskeleton fibers that are primarily responsible for moving a whole cell around are _____.

Microfilaments

Macrofilaments

Milifilaments

Answer

Correct Answer: Microfilaments

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The thylakoid membranes bring together the components necessary to carry out the _____.

Light reactions

Oxygen

NADPH

ATP

Answer

Correct Answer: Light reactions

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The process of sound waves traveling to the brain is known as ________ conduction.

Sound

Sensorineural

Bone

Neural

Answer

Correct Answer: Sensorineural

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The process of photosynthesis converts carbon atoms from carbon dioxide into _______.

Sugars

Hydrogen

Oxygen

Salts

Answer

Correct Answer: Sugars

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The process of nuclear division is called _____.

Metaphase

Interphase

Mitosis

S stage

Answer

Correct Answer: Mitosis

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The primary function of light absorption by photosystems i and ii is to produce __________.

Free, energized electrons

Fluorescence

Heat

Oxygen

Answer

Correct Answer: Free, energized electrons

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The light reactions of photosynthesis use _ and produce _. quizlet

Water & NADPH

NADP+, Light,

NADPH, O2

Answer

Correct Answer: Water & NADPH

Note: This Question is unanswered, help us to find answer for this one

Light-dependent reactions build nadph and oxygen by ________________ .

Oxidation and reduction.

Oxidation and dehydration

Reduction. and deduction

Answer

Correct Answer: Oxidation and reduction.

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In photosynthesis, what is the fate of the oxygen atoms present in co2? they end up __________.

Water

Carbon dioxide

Chlorophyll

The sun

Soil

Answer

Correct Answer: Carbon dioxide

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The function of cellular respiration is to __________

Synthesize biochemical energy

To produce oxygen

Synthesize chemical energy

Answer

Correct Answer: Synthesize biochemical energy

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The haploid result of meiosis i is called a __________.

Secondary spermatocyte

Primary spermatocyte

Tertiary spermatocyte

Answer

Correct Answer: Secondary spermatocyte

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The function of mitosis and cytokinesis is to produce daughter cells that __________.

Identical copies of a chromosome

Dispersed in the nucleus

Are genetically identical to the parent cell

Are genetically identical to the daughter cell

Answer

Correct Answer: Are genetically identical to the parent cell

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The nadph required for co2 fixation is produced __________.

By the reduction of O2

In direct proportion to the amount of O2 produced

By the hydrolysis of ATP

By cyclic photophosphorylation

Answer

Correct Answer: In direct proportion to the amount of O2 produced

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The main site for water reabsorption along the nephron is the __________.

Proximal convoluted tubule

Protein

Cotransport

Answer

Correct Answer: Proximal convoluted tubule

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Somatic cells in humans differs from gametes in that human somatic cells __________.

One; diploid

Two; diploid

Three; diploid

Answer

Correct Answer: Two; diploid

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You know that this cell is in a(n) _ solution because the cell _.

Hypertonic;loses water

Hypotonic;loses water

Isotonic;loses water

None of these

Answer

Correct Answer: Hypertonic;loses water

Note: This Question is unanswered, help us to find answer for this one

You can recognize the process of pinocytosis when _____

The cell is engulfing extracellular fluid

Microbes are engulfed into the macrophage via phagocytosis.

Both A and B

None of the above

Answer

Correct Answer: The cell is engulfing extracellular fluid

Note: This Question is unanswered, help us to find answer for this one

When o2 accepts electrons in aerobic respiration, it is converted to ____.

CO2

Oxygen

H20

Carbon

Answer

Correct Answer: H20

Note: This Question is unanswered, help us to find answer for this one

Upon completion of telophase i and cytokinesis, there is(are) ______ cell(s).

Four haploid

Two diploid

Two haploid

One diploid

Answer

Correct Answer: Four haploid

Note: This Question is unanswered, help us to find answer for this one

The products of the light reactions of photosynthesis are ______.

ATP and NADH

ATP and NAD+

RuBP and O2

ATP and NADPH

Answer

Correct Answer: ATP and NADPH

Note: This Question is unanswered, help us to find answer for this one

The final metabolite produced by glycolysis is ___________.

Cetyl CoA.

Pyruvate

3-phosphoglycerate.

Glyceraldehyde 3-phosphate

Answer

Correct Answer: Pyruvate

Note: This Question is unanswered, help us to find answer for this one

The f0 base of atp synthase serves as a(n) ______.

Enzyme that synthesizes ATP

Enzyme that hydrolyzes ATP

A channel that conducts protons from the intermembrane space back to the matrix.

A channel that conducts protons from the matrix back to the intermembrane space

Answer

Correct Answer: A channel that conducts protons from the intermembrane space back to the matrix.

Note: This Question is unanswered, help us to find answer for this one

The calvin cycle requires and from the light-dependent reactions in order to operate.

ATP ; NADPH

Glucose ;carbon dioxide

Celectrons ; NADH

Oxygen; carbon dioxide

Answer

Correct Answer: ATP ; NADPH

Note: This Question is unanswered, help us to find answer for this one

The amount of energy invested into glycolysis is ____________ atp

Answer

Correct Answer: 2

Note: This Question is unanswered, help us to find answer for this one

Ribosomes/ribosomal subunits are found ________.

Free in the cytoplasm

In the nucleus

Attached to endoplasmic

Reticulum

Answer

Correct Answer: Free in the cytoplasm

Note: This Question is unanswered, help us to find answer for this one

Respiration , and cellular respiration .

Is gas exchange , produces ATP

Produces ATP, is gas exchange

Loses electrons , loses energy

Loses electrons ,oxygen gains

Answer

Correct Answer: Is gas exchange , produces ATP

Note: This Question is unanswered, help us to find answer for this one

Nicotinamide adenine dinucleotide (nad) ________.

Transports oxygen in various metabolic pathways

Picks up and delivers hydrogens to acceptor molecules

Is another form of ATP

Is a form of lactic acid

Answer

Correct Answer: Picks up and delivers hydrogens to acceptor molecules

Note: This Question is unanswered, help us to find answer for this one

In cellular respiration, ___ atp molecules must be input to initiate the process of glycolysis.

Answer

Correct Answer: 2

Note: This Question is unanswered, help us to find answer for this one

A cell in late anaphase of mitosis will have _____.

No chromosomes in the center of the cell

Normal growth and cell function

Cyclins

Prophase

Answer

Correct Answer: No chromosomes in the center of the cell

Note: This Question is unanswered, help us to find answer for this one

Sister chromatids separate from each other during _____.

Metaphase I

Anaphase I

Telophase I

Anaphase II

Answer

Correct Answer: Anaphase II

Note: This Question is unanswered, help us to find answer for this one

The final electron acceptor associated with photosystem i is _____

Oxygen

Water.

NADP.

NADPH

Answer

Correct Answer: NADP.

Note: This Question is unanswered, help us to find answer for this one

The energy of wavelengths that appear ______ is least useful to photosynthesis.

Orange

Red

Green

Violet

Answer

Correct Answer: Green

Note: This Question is unanswered, help us to find answer for this one

Sry is best described as _____.

A gene region present on the Y chromosome that triggers male development

A gene present on the X chromosome that triggers female development

An autosomal gene that is required for the expression of genes on the Y chromosome

An autosomal gene that is required for the expression of genes on the X chromosome

Answer

Correct Answer: A gene region present on the Y chromosome that triggers male development

Note: This Question is unanswered, help us to find answer for this one

The sigma subunit of bacterial rna polymerase ___________________.

Contains the catalytic activity of the polymerase.

Remains part of the polymerase throughout transcription.

Recognizes promoter sites in the DNA.

Recognizes transcription termination sites in the DNA

Answer

Correct Answer: Recognizes promoter sites in the DNA.

Note: This Question is unanswered, help us to find answer for this one

Simple diffusion and facilitated diffusion both _______.

Require ATP

Move solutes against their concentration gradient

Move solutes with their concentration gradient

Utilize a membrane-embedded carrier protein

Answer

Correct Answer: Move solutes with their concentration gradient

Note: This Question is unanswered, help us to find answer for this one

The capability to inherit from more than one class is called ____ inheritance.

Multiple inheritance

Collision

Polyinheritance

Dynamic method binding

Answer

Correct Answer: Dynamic method binding

Note: This Question is unanswered, help us to find answer for this one

The calvin cycle makes direct use of to make .

CO2, ATP, and NADPH . . . sugar

CO2, ATP, and NADPH . . . sugar and O2

Light energy, CO2, and water . . . sugar and O2

Light energy and CO2 . . . sugar

Answer

Correct Answer: CO2, ATP, and NADPH . . . sugar

Note: This Question is unanswered, help us to find answer for this one

The calvin cycle describes the conversion of ___.

Carbon dioxide to carbohydrates

Carbohydrates to proteins

Water to carbon dioxide

Carbon dioxide to amino acids

Answer

Correct Answer: Carbon dioxide to carbohydrates

Note: This Question is unanswered, help us to find answer for this one

When does dna replication take place regarding meiosis? dna replication _____.

Does not take place in cells destined to undergo meiosis

Occurs before meiosis 1 begins

Occurs between meiosis I and meiosis II

Occurs during prophase

Answer

Correct Answer: Occurs before meiosis 1 begins

Note: This Question is unanswered, help us to find answer for this one

The atp made during fermentation is generated by _____.

The electron transport chain

Substrate-level phosphorylation

Chemiosmosis

Oxidative phosphorylation

Answer

Correct Answer: Substrate-level phosphorylation

Note: This Question is unanswered, help us to find answer for this one

Plasma is while formed elements are .

A blood gas; blood clots

The liquid portion of blood; the cells

Lacking in protein; regulators of blood osmolality

The cellular portion of blood; acellular components

Answer

Correct Answer: The liquid portion of blood; the cells

Note: This Question is unanswered, help us to find answer for this one

When atp is hydrolyzed into adp and inorganic phosphate, _____.

Free energy is released

Free energy is required

There is no change in free energy

A redox reaction has occurred

Answer

Correct Answer: Free energy is released

Note: This Question is unanswered, help us to find answer for this one

When an animal cell is placed in a hypotonic solution, _____.

Die

Take on water

Lose water

Divide

Answer

Correct Answer: Take on water

Note: This Question is unanswered, help us to find answer for this one

When a molecule absorbs a photon, one of its electrons is raised to the ______ state.

Energetic

Quantum

Higher

Excited

Answer

Correct Answer: Excited

Note: This Question is unanswered, help us to find answer for this one

When we first see chiasmata under a microscope, we know that _____.

Prophase I is occurring

Prophase II is occurring

Prophase III is occurring

None of these

Answer

Correct Answer: Prophase I is occurring

Note: This Question is unanswered, help us to find answer for this one

When chloroplast pigments absorb light, __________.

They become reduced

They lose potential energy

Their electrons become excited

The Calvin cycle is triggered

Answer

Correct Answer: Their electrons become excited

Note: This Question is unanswered, help us to find answer for this one

The value of the _____ function at -2.99 is -2.

Chromatin

Centriole

Mitochondrion

Ribosome

Answer

Correct Answer: Chromatin

Note: This Question is unanswered, help us to find answer for this one

The three catalytic sites of atp synthase ___________.

Have different substrate binding affinities

Have different product binding affinities

At any one time are present in different conformations

Pass sequentially through their three different conformations

All of these

Answer

Correct Answer: All of these

Note: This Question is unanswered, help us to find answer for this one

Zygosporangia are _____.

Diploid

Haploid

Heterokaryotic

Haplodiploid

Answer

Correct Answer: Heterokaryotic

Note: This Question is unanswered, help us to find answer for this one

Vacuoles are ______.

Membranous sacs

Manufactured by ribosomes

Composed of microtubules

Found only in plant cells

Answer

Correct Answer: Membranous sacs

Note: This Question is unanswered, help us to find answer for this one

This graph illustrates a(n) _____ reaction.

Exergonic

Spontaneous

Catabolic

Hydrolysis

Endergonic

Answer

Correct Answer: Endergonic

Note: This Question is unanswered, help us to find answer for this one

This diagram of the human life cycle shows that ________.

Diploid zygote undergoes meiosis to produce an adult human

Fertilization produces a haploid zygote

Meiosis produces haploid sperm and egg cells

Meiosis produces a diploid zygote

Answer

Correct Answer: Meiosis produces haploid sperm and egg cells

Note: This Question is unanswered, help us to find answer for this one

Principles of ____ must be applied to break the cycle of infection.

Asepsis

10 days

Shingles

Influenza

Answer

Correct Answer: Asepsis

Note: This Question is unanswered, help us to find answer for this one

Genetic diversity requires __________.

Asexual reproduction and mitosis

Sexual reproduction, independent assortment, crossing over between nonsister chromatids of homologous chromosomes, and random fertilization

Is an example of an animal that has not reproduce sexually and 40 million years

Are all of the cells of the body except for the gametes and their purcursors

Answer

Correct Answer: Sexual reproduction, independent assortment, crossing over between nonsister chromatids of homologous chromosomes, and random fertilization

Note: This Question is unanswered, help us to find answer for this one

The tca cycle is located in the __ of bacteria, and in the _ of eukaryotes.

Cytoplasm; mitochondrial matrix

Plasma membrane; inner mitochondrial membrane

Plasma membrane; mitochondrial matrix

Cytoplasm; inner mitochondrial membrane

Answer

Correct Answer: Plasma membrane; mitochondrial matrix

Note: This Question is unanswered, help us to find answer for this one

The sry gene is best described as ________.

A gene present on the Y chromosome that triggers male development

A male inherits only one allele of the X-linked gene controlling hair color.

One-half of the daughters of an affected father and a carrier mother could have this condition.

The two genes are likely to be located on different chromosomes

Answer

Correct Answer: A gene present on the Y chromosome that triggers male development

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The sexual cycle of the diploid, multicellular algal genus fucus involves __________.

Mitosis

Meiosis

Fertilization

All of these

Answer

Correct Answer: All of these

Note: This Question is unanswered, help us to find answer for this one

The reaction atp converted to adp + pi is an example of a(n) _________ reaction.

Chemical

Spontaneous

Exergonic

Hydrolysis

Endergonic

Answer

Correct Answer: Endergonic

Note: This Question is unanswered, help us to find answer for this one

The proximate (immediate) source of energy for oxidative phosphorylation is _____.

Substrate-level phosphorylation

Kinetic energy that is released as hydrogen ions diffuse down their concentration gradient

Oxidative phosphorylation

NADH and FADH2 ... intermembrane space

Answer

Correct Answer: Kinetic energy that is released as hydrogen ions diffuse down their concentration gradient

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The proteins of the electron transport chain active in the light-dependent reactions _____.

Are membrane proteins present in the thylakoid

An electron is excited.

It is used to establish and maintain a proton gradient.

Splitting water molecules

Answer

Correct Answer: Splitting water molecules

Note: This Question is unanswered, help us to find answer for this one

The plasma membrane of the sea urchin egg _____.

Is outside of the fertilization membrane

Releases calcium, which initiates the cortical reaction

Has receptor molecules that are specific for binding acrosomal proteins

Is a mesh of proteins crossing through the cytosol of the egg

Answer

Correct Answer: Has receptor molecules that are specific for binding acrosomal proteins

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The main enzyme of glycogen catabolism is _, which catalyzes a _ reaction.

An aldehyde; carboxylic acid

Glucose-6; phosphatase

Glycogen phosphorylase; phosphorolysis

Cytosol; cytosol

Answer

Correct Answer: Glycogen phosphorylase; phosphorolysis

Note: This Question is unanswered, help us to find answer for this one

The law of segregation tells us that the rearrangement of chromosomes into gametes is _________.

Random

Series

Sequence

None of these

Answer

Correct Answer: Random

Note: This Question is unanswered, help us to find answer for this one

The cell conducts its normal functions during ______.

Interphase

Meiosis I

Meiosis II

Answer

Correct Answer: Interphase

Note: This Question is unanswered, help us to find answer for this one

Tca cycle enzymes are found in the _____ _ of eukaryotic cells.

Mitochondrial matrix

Ethanol

Carbon dioxide

Methanol

Answer

Correct Answer: Mitochondrial matrix

Note: This Question is unanswered, help us to find answer for this one

Synapsis of homologous chromosomes and crossing-over take place during ____________ .

Metaphase II

Prophase I

Prophase II

Telophase II

Answer

Correct Answer: Prophase I

Note: This Question is unanswered, help us to find answer for this one

Sucrase uses ____ to cleave sucrose into two monosaccharides.

Produce NADH and ATP

Water

Catabolic reactions

Anabolic reactions

Answer

Correct Answer: Water

Note: This Question is unanswered, help us to find answer for this one

Sexual life cycle of ____ involves meiosis

Diploid stage

Fertilization

Mitosis

Exact genetic copies

Answer

Correct Answer: Diploid stage

Note: This Question is unanswered, help us to find answer for this one

Psi and psii couple oxidation of __________ to the reduction of nadp+.

NADPH

Water

NADH

Answer

Correct Answer: Water

Note: This Question is unanswered, help us to find answer for this one

Plants use the ____________ to make organic molecules.

Light-dependent reactions

Light-independent reactions

NADPH

Energy

Answer

Correct Answer: Light-independent reactions

Note: This Question is unanswered, help us to find answer for this one

Plants photosynthesize _____

Only in the light but respire in light and dark

Only in the light but respire only in the dark

Only in the dark but respire only in the light

And respire only in the light

Answer

Correct Answer: Only in the light but respire in light and dark

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Photosystem i is a _____ than photosystem ii.

Weak oxidant and strong reductant

They take place in different compartments of the same organelle

Individual disk structure in chloroplast

Fluid filled space around grana

Answer

Correct Answer: Weak oxidant and strong reductant

Note: This Question is unanswered, help us to find answer for this one

Photosynthetic organisms are ______

Heterotrophs

Animals

Consumers

Producers

Decomposers

Answer

Correct Answer: Producers

Note: This Question is unanswered, help us to find answer for this one

Photosynthesis contributes to plant growth by _____

Taking in oxygen and making wood

Taking in carbon dioxide and making sugars (carbohydrates)

Synthesizing carbon dioxide and making cellulose

Converting sugar to oxygen and water

Answer

Correct Answer: Taking in carbon dioxide and making sugars (carbohydrates)

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Pfk-1 is _ by atp and _ by adp.

Inhibited; inhibited

Inhibited; activated

Activated; activated

Activated; inhibited

Answer

Correct Answer: Inhibited; activated

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Oxidative phosphorylation occurs ; the beneficial end product is .

In the inter membranous space due to the electron transport system, ATP

As CO2; ATP

ATP; as CO2

None of these

Answer

Correct Answer: In the inter membranous space due to the electron transport system, ATP

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Organic molecules store _ energy in their _ bonds.

Potential; covalent

Covalent; potential

Oxidized; potential

Reduced; covalent

Answer

Correct Answer: Potential; covalent

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Mitosis _ chromosome number, whereas meliosis _ the chromosome number of the daughter cells

Maintains, decreases

Decreases; maintains

Meiosis; telophase

Telophase; meiosis

Answer

Correct Answer: Maintains, decreases

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Microtubules and microfilaments are made from proteins that are shaped like _____.

Solid rods

Balls

Thin sheets

Hollow tubes

Answer

Correct Answer: Balls

Note: This Question is unanswered, help us to find answer for this one

Membrane lipids do not include _______.

Are not stored in the body in significant amounts

Triacylglycerols.

It is not usually a component of eukaryotic membranes.

None of these

Answer

Correct Answer: Triacylglycerols.

Note: This Question is unanswered, help us to find answer for this one

Meiotic cell division replicates a cell's dna and then divides .

Twice, once

Once, twice

Twice, twice

Once, oncee

Answer

Correct Answer: Once, twice

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Meiotic cell division in animals occurs in the and results in the production of .

Prophase - metaphase; anaphase - telophase

Reproductive tissues; gametes.

The G1 phase of interphase; gametes

The S phase of interphase; gametes

Answer

Correct Answer: Reproductive tissues; gametes.

Note: This Question is unanswered, help us to find answer for this one

Meiosis i produces _ cells, each of which is _

Four ... haploid

Telophase II

Anaphase I

Two ... haploid

Answer

Correct Answer: Two ... haploid

Note: This Question is unanswered, help us to find answer for this one

Meiosis ___________the parental chromosome number

Halves

Alleles

4 haploid cells

Haploid germ

Answer

Correct Answer: Halves

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Lysosomes that lack mannose 6 phosphate receptors _____

Have unstable membranes

Receive

Do not receive enzyme shipments from the Golgi apparatus

Stick to transport vesicles and impede the transfer of enzymes

Answer

Correct Answer: Do not receive enzyme shipments from the Golgi apparatus

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In yeast signal transduction, a yeast cell releases a mating factor, which ________.

Binds to receptors on the membranes of other types of yeast cells

Intracellular receptors for testosterone are present only in target cells.

It would not be able to activate G proteins on the cytoplasmic side of the plasma membrane.

It prevents the caspase activity of ced-3 and ced-4.

Answer

Correct Answer: Binds to receptors on the membranes of other types of yeast cells

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In this reaction _____

Entropy has decreased

The products have been rearranged to form reactants

The products have less potential energy than the reactants

CD is a product

AC is a reactant

Answer

Correct Answer: The products have less potential energy than the reactants

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In this organelle, carbon dioxide and water are converted to _________ and oxygen.

Mitochondria

Pyruvate

Ribose

Glucose

Answer

Correct Answer: Glucose

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In the metabolism of amino acids for energy, the amine group is ________.

Excreted as urea

Enzymes

Liver

Riboflavin

Answer

Correct Answer: Excreted as urea

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In the ets, ________ accepts electrons from one molecule and transfers them to another.

Anabolic

Coenzyme

Urea

Fat-soluble

Answer

Correct Answer: Coenzyme

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In the citric acid cycle, atp molecules are produced by _____.

Photosynthesis

Substrate-level phosphorylation

Cellular respiration

Answer

Correct Answer: Substrate-level phosphorylation

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In the citric acid cycle (also called the krebs cycle), atp molecules are produced by _____.

Cellular respiration

Substrate-level phosphorylation

Oxidative phosphorylation

Photophosphorylation

Photosynthesis

Answer

Correct Answer: Substrate-level phosphorylation

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In synaptonemal complex strand exchange between chromosomes occurs at this average _______distance?

120-400 nm

2-120

400-800

120-800

Answer

Correct Answer: 120-400 nm

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In respiration, beta oxidation involves the _____.

Oxidation of glucose

Oxidation of pyruvate

Regulation of glycolysis

Breakdown of fatty acids

Answer

Correct Answer: Breakdown of fatty acids

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In photosynthetic cells, synthesis of atp by the chemiosmotic mechanism occurs during _____.

Photosynthesis only

Respiration only

Photosynthesis and respiration

Neither photosynthesis nor respiration

Photorespiration only

Answer

Correct Answer: Photosynthesis and respiration

Note: This Question is unanswered, help us to find answer for this one

In photosynthesis, the light reactions while the calvin cycle .

Capture solar energy; converts the captured energy to chemical potential energy

ATP supplies energy and NADPH supplies electrons for reducing power

C4 plants need energy to move fixed carbon compounds into bundle sheath cells

Open stomata only at night, limiting water loss because of heat and low humidity.

Answer

Correct Answer: Capture solar energy; converts the captured energy to chemical potential energy

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In humans, the number of tetrads formed during mitosis is ______.

Answer

Correct Answer: 0

Note: This Question is unanswered, help us to find answer for this one

In glycolysis, for each molecule of glucose oxidized to pyruvate _____.

It increases the surface for oxidative phosphorylation.

Two molecules of ATP are used and four molecules of ATP are produced.

Glucose → NADH → electron transport chain → oxygen

The extraction of energy from high-energy electrons remaining from glycolysis and the citric acid cycle

Answer

Correct Answer: Two molecules of ATP are used and four molecules of ATP are produced.

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In fermentation, is .

NADH . . . reduced

NADH . . . oxidized

NAD+ . . . oxidized

Ethanol . . . oxidized

Answer

Correct Answer: NADH . . . oxidized

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In fermentation _ is reduced and _ is oxidized.

Lactate .... NAD+

Pyruvate.... NADH

Lactate .... ethanol

NADH .... NAD+

Answer

Correct Answer: Pyruvate.... NADH

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In eukaryotes, most of the high-energy electrons released from glucose by cell respiration _____.

The citric acid cycle

Reduce NAD+ to NADH

Formation of NADH and FADH2

CO2 and NADH are forme

Answer

Correct Answer: Reduce NAD+ to NADH

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In cell cycle, g1 refers to the period of time between and .

M phase and S phase

S phase and M phase

M phase and M phase

S phase and S phase

Answer

Correct Answer: M phase and S phase

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In an rna sample, ________.

The number of purine may or may not equal the number of and pyrimidine

The number of purine always equals the number of pyrimidine

The number of thiamine may or may not equal the number of adenine

The number of thiamine always equals the number of uracil

Answer

Correct Answer: The number of purine may or may not equal the number of and pyrimidine

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In all exergonic reactions, ___.

Some reactants will be converted to products

The products have more total energy than the reactants

The reaction proceeds with a net release of free energy

The reactions are nonspontaneous

A net input of energy from the surroundings is required for the reactions to proceed

Answer

Correct Answer: The reactions are nonspontaneous

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In a plant's sexual life cycle _____.

Sporophytes produce gametes by meiosis

Gametophytes produce gametes by mitosis

Gametophytes produce gametes by meiosis

Sporophytes produce gametes by mitosis

Answer

Correct Answer: Gametophytes produce gametes by mitosis

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Immediately after the fusion of sperm and egg plasma membranes, __________.

The vitelline layer hardens and separates from the plasma membrane

The sperm and egg nuclei fuse

Cleavage begins

There is a change in the egg membrane that prevents the entry of other sperm

Answer

Correct Answer: There is a change in the egg membrane that prevents the entry of other sperm

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If your high power objective is 40x and your eyepiece is 15x, the total magnification is _____x.

800

600

1000

400

Answer

Correct Answer: 600

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If a sperm cell contains 8 chromosomes, it comes from an animal that has ______ chromosomes.

Answer

Correct Answer: 16

Note: This Question is unanswered, help us to find answer for this one

If a haploid sperm cell contains 8 chromosomes, it comes from an animal that has _____ chromosomes.

Answer

Correct Answer: 16

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Homologous pairs of chromosomes align opposite of each other at the equator of a cell during _____.

Mitosis and meiosis ll

Meiosis metaphase I

Metaphase

Meiosis I only

Answer

Correct Answer: Meiosis metaphase I

Note: This Question is unanswered, help us to find answer for this one

Homologous chromosomes ______

Carry genes controlling the same inherited characteristics

Include only the autosomes

Are a set of chromosomes that the cell received from one parent

Carry the same versions of all genes

Answer

Correct Answer: Carry genes controlling the same inherited characteristics

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Glycolysis is the only stage of cellular respiration that _____

In the cytoplasmic fluid

Oxygen gains

Requires ATP to make ATP

Regenerate (oxidized) NAD+

Recycle NADH through fermentation

Answer

Correct Answer: Requires ATP to make ATP

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For each glucose that enters glycolysis, _____ nadh enter the electron transport chain.

Answer

Correct Answer: 10

Note: This Question is unanswered, help us to find answer for this one

For each glucose that enters glycolysis, _____ nadh + h+ are produced by the citric acid cycle.

Answer

Correct Answer: 6

Note: This Question is unanswered, help us to find answer for this one

For a species with four pairs of chromosomes, ________ chromosome combinations are possible.

Answer

Correct Answer: 16

Note: This Question is unanswered, help us to find answer for this one

Following mitosis and cytokinesis, daughter cells are __________.

Ensure that cancer does not occur.

Genetically identical to the parent cell

No, because the cancerous cells have spread throughout the body.

Intestinal tract and skin cell replacement.

Answer

Correct Answer: Genetically identical to the parent cell

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Fermentation pathways have the __________ in common.

Oxidation of NADH to NAD+

Production of ethanol

Production of lactic acid

Use of oxygen as an electron acceptor

Answer

Correct Answer: Oxidation of NADH to NAD+

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Fatty acids are ; they function in the cell as .

Short chains of double-bonded carbon molecules; vitamins, cofactors, and storage

Long, unbranched hydrocarbon chains with a carboxyl group at one end; building

Four-ringed hydrocarbon molecules; key components of membranes

Short chains of double-bonded carbon molecules; storage lipids

Short chains of double-bonded carbon molecules; vitamins and cofactors

Answer

Correct Answer: Long, unbranched hydrocarbon chains with a carboxyl group at one end; building

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Fad, nad, and coenzyme a are all _____ carriers.

Hydrogen

Electron

ATP

Hydrogen and electron

None of the choices is correct.

Answer

Correct Answer: Hydrogen and electron

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Eukaryotes are ________ prokaryotes.

Peptidoglycan.

Dependent upon

Brown alga.

Actinomycetes

Methanogens

Answer

Correct Answer: Dependent upon

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Energy is used, converting ____________ to adp.

ATP

ADP

Both

None of these

Answer

Correct Answer: ATP

Note: This Question is unanswered, help us to find answer for this one

Energy is captured for photosynthesis by _____ molecules.

ATP

Glucose

Cristae

Chlorophyll

Answer

Correct Answer: Chlorophyll

Note: This Question is unanswered, help us to find answer for this one

Ecosystem productivity is principally limited by _______

Sunlight and nutrient availability

Water and nutrient availability

The availability of time and nutrients

None of the above

Answer

Correct Answer: Sunlight and nutrient availability

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During the calvin cycle, carbon dioxide is _____ to drive the formation of sugars

Oxidized

Recycled

Reduced

Produced

Answer

Correct Answer: Reduced

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During redox reactions ______

The loss of electrons from one substance is called reduction

Electrons are lost from one substance and added to another substance

Protons from one molecule replace the electrons lost from another molecule

A substance that gains electrons is said to be oxidized

None of the above

Answer

Correct Answer: Electrons are lost from one substance and added to another substance

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During photosynthesis, _ is reduced to _.

Carbon dioxide; oxygen

Sugar; oxygen

Oxygen; water

Carbon dioxide; sugar

Water; carbon dioxide

Answer

Correct Answer: Carbon dioxide; sugar

Note: This Question is unanswered, help us to find answer for this one

During photosynthesis in plants and algae, _ is oxidized and _ is reduced.

H2O, CO2

H8O, CO2

H2O, CO98

H2O, CO102

Answer

Correct Answer: H2O, CO2

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During metaphase i ______

Have two nuclei

Chromosomes line up in the middle of the cell

Seek early detection of tumors

Prophase, metaphase, anaphase, telophase (PMAT)

Answer

Correct Answer: Chromosomes line up in the middle of the cell

Note: This Question is unanswered, help us to find answer for this one

During meiosis, the processes of and increase genetic diversity.

Anaphase II

Anaphase

Homologous

Crossing over, independent assortment

Answer

Correct Answer: Crossing over, independent assortment

Note: This Question is unanswered, help us to find answer for this one

During cellular respiration ____.

Glucose is oxidized and there is net production of ATP

Glucose is oxidized and there is net hydrolysis of ATP

Glucose is reduced and there is net hydrolysis of ATP

Glucose is reduced and there is net production of ATP

Answer

Correct Answer: Glucose is oxidized and there is net production of ATP

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During _____ sister chromatids separate.

Prophase II

Diploid

Anaphase I

Anaphase II

Prophase I

Answer

Correct Answer: Anaphase II

Note: This Question is unanswered, help us to find answer for this one

Duplication of the chromosomes to produce sister chromatids _____.

Haploid gametes ... diploid zygote

Occurs in both mitosis and meiosis

They can activate and inactivate certain genes.

The mitotic spindle would not form.

Answer

Correct Answer: Occurs in both mitosis and meiosis

Note: This Question is unanswered, help us to find answer for this one

Dna is replicated during the __________ subphase of interphase of the cell cycle.

Telophase

Prophase

Interphase

Anaphase

Answer

Correct Answer: Interphase

Note: This Question is unanswered, help us to find answer for this one

Denitrifying bacteria convert _ to _

Ammonium ... nitrogen gas

Nitrates ... nitrogen gas

Nitrogen gas ... nitrites

Nitrogen gas ... ammonium

Answer

Correct Answer: Nitrates ... nitrogen gas

Note: This Question is unanswered, help us to find answer for this one

Cytokinesis refers to __________

The mitotic spindle breaks down.

Division of the cytoplasm

Separation of the sister chromatids

Identical copies of each other if they are part of the same chromosome

Answer

Correct Answer: Division of the cytoplasm

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Compared to c3 plants, c4 plants _____.

They can fix carbon at the lower CO2 concentrations that develop when the stomata are closed

Can continue to fix CO2 even at lower CO2 concentrations and higher oxygen concentrations

The Calvin cycle has three phases: carbon fixation, reduction, and regeneration of RuBP.

Plants are classified as producers because they fix inorganic carbon into organic molecules.

Answer

Correct Answer: Can continue to fix CO2 even at lower CO2 concentrations and higher oxygen concentrations

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Clusters of chlorophyll and accessory pigments are called ________.

The Golgi apparatus

Chloroplasts

Photosystems

Photosynthetic

Answer

Correct Answer: Photosystems

Note: This Question is unanswered, help us to find answer for this one

Chromatids are __________.

Identical copies of each other if they are part of the same chromosome

The sister chromatids are pulled apart toward opposite sides of the cell.

Cells of benign tumors do not metastasize; those of malignant tumors do

Regulate the cell cycle through a variety of stop and go signals

Answer

Correct Answer: Identical copies of each other if they are part of the same chromosome

Note: This Question is unanswered, help us to find answer for this one

Chloroplasts are to __ as _ are to aerobic respiration

Stroma, cristae

Photosynthesis, mitochondria

Thylakoid membranes, matrix

Protein synthesis, lysosomes

Answer

Correct Answer: Photosynthesis, mitochondria

Note: This Question is unanswered, help us to find answer for this one

Cellular respiration is a series of _____ reactions.

Catabolic

Metabolic

Anabolism

All of these

Answer

Correct Answer: Catabolic

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Carbon dioxide functions as a greenhouse gas because it _____.

Traps heat that has been radiated from Earth similar to the way the glass of a greenhouse traps heat

The absorption of carbon dioxide by plants and the ocean increases

Decomposition of detritus

The concentration of toxin can more than double at each level of the food chain.

Answer

Correct Answer: Traps heat that has been radiated from Earth similar to the way the glass of a greenhouse traps heat

Note: This Question is unanswered, help us to find answer for this one

Cam plants conserve water by ________.

Incorporating CO2 into RuBP

Running the Calvin cycle at night

Growing very deep roots

Keeping their stomata closed at night

Opening their stomata only at night

Answer

Correct Answer: Opening their stomata only at night

Note: This Question is unanswered, help us to find answer for this one

Cadherins are __________.

Developmental fate of each embryonic cell is determined very early

Retain the capacity to develop into a complete embryo

Evolution of the Hox gene complex provided developmental flexibility.

Proteins that play key roles in how animal cells attach to one another

Answer

Correct Answer: Proteins that play key roles in how animal cells attach to one another

Note: This Question is unanswered, help us to find answer for this one

Bone and blood cells are considered _____

Protoplasm

Cytoplasm

A plasma membrane

Bright-field microscope

Specialized cells

Answer

Correct Answer: Specialized cells

Note: This Question is unanswered, help us to find answer for this one

Atp is a good energy currency for cells because it has a(n) _____ amount of gibbs free energy.

Positive

Chemical

Negative

Intermediate

Substrate

Answer

Correct Answer: Intermediate

Note: This Question is unanswered, help us to find answer for this one

At a chiasma, two ________ are attached to each other.

Homologous or sister chromatids

Nonhomologous chromosomes

Daughter cells

Homologous or nonsister chromatids

Answer

Correct Answer: Homologous or nonsister chromatids

Note: This Question is unanswered, help us to find answer for this one

Asexual reproduction occurs during _____.

Fertilization

Mitosis

Chromosome exchange between organisms of different species

Meiosis

Answer

Correct Answer: Mitosis

Note: This Question is unanswered, help us to find answer for this one

An enzyme _____

Is an organic catalyst

Is a source of energy for endergonic reactions

Is a inorganic catalyst

Increases the EA of a reaction

Can bind to nearly any molecule

Answer

Correct Answer: Is an organic catalyst

Note: This Question is unanswered, help us to find answer for this one

Allelic variation is an important source of __________ in a population.

Multiplication of body cells

Genetic diversity

Four haploid cells

Genetic diversityasexual reproduction and mitosis

Answer

Correct Answer: Genetic diversity

Note: This Question is unanswered, help us to find answer for this one

Aerobic metabolism always requires _____

Oxygen

Water

Cytosol

ATP

Answer

Correct Answer: Oxygen

Note: This Question is unanswered, help us to find answer for this one

Adult humans cannot synthesize _ out of the _ common amino acids.

Cristae

Nine; twenty

Outer membrane

Intermembrane space

Answer

Correct Answer: Nine; twenty

Note: This Question is unanswered, help us to find answer for this one

A triploid individual _____.

Has an additional stage in meiosis (meiosis I, meiosis II, and meiosis III)

Is unable to undergo mitosis

Is unable to undergo normal meiosis

Produces offspring with an even number of chromosome sets (for example, tetraploid, hexaploid)

Answer

Correct Answer: Is unable to undergo normal meiosis

Note: This Question is unanswered, help us to find answer for this one

A small amount of atp is made in glycolysis _____.

By the transfer of a phosphate group from a fragment of the glucose to ADP (Substrate-level phosphorylation)

Substrate-level phosphorylation

Mitochondria

Mitochondrial matrix

Answer

Correct Answer: By the transfer of a phosphate group from a fragment of the glucose to ADP (Substrate-level phosphorylation)

Note: This Question is unanswered, help us to find answer for this one

A sarcomere is ________.

The nonfunctional unit of skeletal muscle

The area between two Z discs

The area between two intercalated discs

The wavy lines on the cell seen in the microscope

Answer

Correct Answer: The area between two Z discs

Note: This Question is unanswered, help us to find answer for this one

A plant performing photosynthesis will produce and consume _.

Water, carbon dioxide.

Oxygen, water.

Oxygen, carbon dioxide.

Carbon dioxide, oxygen.

Carbon dioxide, water.

Answer

Correct Answer: Oxygen, carbon dioxide.

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A meiotic division produces _____ daughter cells.

Answer

Correct Answer: 4

Note: This Question is unanswered, help us to find answer for this one

A karyotype is a __________.

A photograph of all the chromosomes in a single cell from an individual

Asexual reproduction and mitosis

Division of the cytoplasm to create two cells

Physically connects homologous chromosomes during prophase I

Answer

Correct Answer: A photograph of all the chromosomes in a single cell from an individual

Note: This Question is unanswered, help us to find answer for this one

A duplicated chromosome has _____ chromatid(s).

Answer

Correct Answer: 2

Note: This Question is unanswered, help us to find answer for this one

________ectomy means the removal of the thymus gland.

Inter

Thym

Lymph

Spleno

Answer

Correct Answer: Thym

Note: This Question is unanswered, help us to find answer for this one

___________ exhibit lower electron affinity.

Lower electron affinity

Greater electron affinity

Greater oxygen-binding ability

Lower oxygen-binding ability

Answer

Correct Answer: Greater electron affinity

Note: This Question is unanswered, help us to find answer for this one

_ transport blood to capillaries, and _ transport blood away from capillaries.

Arterioles ... venules

Into the right atrium

Arterial pressure during heart contraction ... arterial pressure during heart relaxation

Liters of blood pumped per minute

Answer

Correct Answer: Arterioles ... venules

Note: This Question is unanswered, help us to find answer for this one

_ has a longer wavelength than _

Red, green

Green, red

Red, blue

Blue, red

Answer

Correct Answer: Red, green

Note: This Question is unanswered, help us to find answer for this one

_ are the subunits of nucleic acids, and _ are the subunits of proteins.

Polypeptides; sugars

Nucleotides; amino acids

Bases; polypeptides

Nucleoli; amino acids

Answer

Correct Answer: Nucleotides; amino acids

Note: This Question is unanswered, help us to find answer for this one

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Cell Biology MCQ

About _____ percent of all new cases of stis worldwide occur in people under the age of 26.

In plants and algae, _____ is the source of the electrons needed for photosynthesis.

The cell cycle results in the production of ______.

Replication moves outward from the origin in ________ direction(s) and is said to be ________.

Red blood cells undergo anaerobic metabolism, which means that they produce ________.

In humans, fertilization usually occurs ________ after intercourse, if an egg is present.

In the redox reactions of cellular respiration, a cell uses both _____ and oxygen.

A ____ is software that is a cumulative package of all security updates plus additional features.

Cells obtain energy by __________ food molecules such as glucose.

C4 plants have evolved different photosynthetic mechanisms. these plants _____.

Autotrophs use the ____________ to make organic molecules.

At the conclusion of glycolysis, most of glucose's chemical energy is found in the ________.

After 3-pga is phosphorylated, it receives energized electrons from _____.

After 3-pga is phosphorylated, it is reduced by _____.

Yeast is used to make bread rise by producing ________ during fermentation.

When something appears blue, it is absorbing all colors except __________.

When oxygen is released as a result of photosynthesis, it is a direct by-product of _____.

The spindle apparatus disintegrates during _____. anaphase telophase interphase metaphase

The process of respiration is ___ % efficient at harnessing the chemical energy in food.

The primary role of oxygen in cellular respiration is to _____.

The most important role of pigments in photosynthesis is to _____.

The light reactions of photosynthesis occur in the __________.

The growth cycle requires _____ to run.

Limiting calories and increasing exercise will cause cells to harvest energy from _____ molecules.

Large amounts of oxygen gas first appeared in earth's atmosphere about ______ years ago.

A prokaryotic cell has _______ but does not have _______.

The hybridization of the oxygen atom labeled x in the structure below is ________.

For a molecule with the formula ab3, the molecular shape is ________.

Ribosomal rna accumulates within __________.

Biochemical analysis uses similarities in __________ as evidence for evolutionary relationships.

Eukaryotic dna is located in the ________ , and its message reaches the ribosome via the _________.

Epidermal growth factor stimulates __________.

Enzymes have specific _____ that determine their function.

In a dna double helix, _____________________.

Facilitated diffusion would not usually be needed to move _______________________across a membrane?

A bacterium running low on nadph could ________ to generate more of this coenzyme.

The 2n number for the cell depicted here is ________.

If there is no flow of extraembryonic fluid over a mouse embryo, ___________.

Microtubules have an inner diameter of ________ and an outer diameter of ________.

Absorbance is _________________________ the concentration of molecules in a solution.

Gene silencing is called __________.

Nuclear pores are organized with _______ symmetry

Protein synthesis ___________ during exercise and ____________ after exercise.

In plant cells, ______ may contain organic nutrients, pigments, and poisons.

The ability to distinguish among 20004000 olfactory stimuli is called __________.

A karyotype (a chromosome display) would be unable to determine ______.

Information coming into the central nervous system is transmitted along ________ neurons.

The ____________ phase is when most cell growth will occur; dna is unreplicated.

The tca cycle enzymes are located in the _________ in bacterial and archaeal cells.

Asexual reproduction _____. see concept 13.1 (page 255)

The _____ forms of the electron carriers nad+/nadh and fadh/fadh2 have high potential energy.

Deamination is the removal of a(n) _____ group in proteins.

The "proton pumps" indicated in the figure are physically associated with ______.

The ordinary light microscope is called a bright-field microscope because _____.

Chemiosmosis uses __________ to supply the energy necessary to phosphorylate adp to atp.

Incoming photons of light energy initiate photosynthesis by _____.

A generalized ____________ contains an antenna complex and a reaction center.

We inhale o2 and we exhale co2. carbon dioxide is produced __________.

The karyotype of a trisomic individual is symbolized as ____.

Chromatin consists of ______.

During the absorptive state, metabolism favors energy storage and __________.

A typical cell contains "powerhouses," which is another name for ____.

In conifers, male gametophytes are called _______ and are formed by the division of microspores.

During translation, uncharged trna molecules leave the ribosome from the _________ site.

During the germinal period, the first task of the zygote's outer cells is _____.

During the final events of cellular respiration, oxygen combines with ________ to form ________.

During cellular respiration, energy is stored in the form of _______.

During _____, the sister chromatids line up in the midplane of the cell.

Cytokinesis typically occurs during the ______ stage of mitosis.

The golgi apparatus packages materials into ________ for transport or export.

Increasing the pressure above the beaker is analogous to _______.

If a cell has accumulated dna damage, it is unlikely to _____.

Calcium ions could be described as "third messengers" because __________.

Anterograde movement of transition vesicles is from __________.

All collagen family members consist of _____ chains arranged in a _______.

Mpf is a dimer consisting of _____.

Centrosomes are structures that contain ____________ oriented ____________ .

Binding of calcium to calmodulin is a step in excitation-contraction coupling of ________ cells.

Emerging viruses that infect human cells can originate from __________.

Replication moves outward from the origin in direction(s) and is said to be .

A prokaryotic cell has _ but does not have _.

Eukaryotic dna is located in the , and its message reaches the ribosome via the _.

Microtubules have an inner diameter of and an outer diameter of .

Protein synthesis _ during exercise and __ after exercise.

During the final events of cellular respiration, oxygen combines with to form .

All collagen family members consist of _ chains arranged in a ___.

Centrosomes are structures that contain oriented .

Unlike white blood cells, red blood cells lose their and as they mature.

Squamous cells are part of _ tissue and are _ shaped.

Ribosomes are a collection of _ that are needed for __.

Proteins are synthesized from the -terminus to the -terminus.

Meiosis starts with _ cells and produces _ gametes.

In the z-scheme is the initial electron donor and is the final electron acceptor

In the reaction glucose + fructose sucrose + water, _ is a reactant and _ is a product.

In the body, fat cells store _ as ____.

In meiosis, of cross over and form __.