Basic Biology MCQ

1. The age of the ocean floor is greatest in subduction zones or _____.

Answer

Correct Answer: Closest to deep-ocean trenches

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2. Preferably, a pre-game meal should be eaten about ________ before an endurance event.

Answer

Correct Answer: 2 to 4 hours

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3. In eukaryotes, the normal or default state is that genes are turned _____.

Answer

Correct Answer: Off through their association in nucleosomes

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4. Is the accompanying figure dna or rna? ________ is the arrow closest to the 5' or 3' end? ________

Answer

Correct Answer: DNA; 3' end; A, 3'

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5. In cladistics, _______________ is(are) the primary criterion used to classify organisms.

Answer

Correct Answer: Common ancestry

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6. The bird says____

Answer

Correct Answer: Henrique Souza

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7. The critical period for major anomalies is longest for the _____ system.

Answer

Correct Answer: Central nervous

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8. Organisms that possess homologous structures probably __________.

Answer

Correct Answer: Share a common ancestor that also had this structure

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9. Phylogenetic trees can always be regarded as ________ about evolutionary relationships.

Answer

Correct Answer: Facts.

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10. Paleontologists organize fossils of related species based on their __________________ similarities.

Answer

Correct Answer: Molecularbehavioralstratigraphicphysical.

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11. The embryonic precursor to the human spinal cord is the _____.

Answer

Correct Answer: Notochord.

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12. Our current ecological footprint __________.

Answer

Correct Answer: Ecological Footprint

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13. One primary advantage of light microscopy over electron microscopy is that ________.

Answer

Correct Answer: Light microscopy allows one to view dynamic processes in living cells.

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14. The binding of a catecholamine to a beta adrenergic receptor will ________.

Answer

Correct Answer: Activate adenylate cyclase

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15. The fastest way for organisms to adapt to a changing environment involves _____.

Answer

Correct Answer: Sexual reproduction

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16. The energy for sensory transduction by the lateral line system in fish comes from _____.

Answer

Correct Answer: Water movements.

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17. In learning, the basal ganglia ____.

Answer

Correct Answer: Integrates information over many trials

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18. Primates enhanced ___________ led to a reduced sense of ___________.

Answer

Correct Answer: Vision;smell

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19. In contemporary societies, state governments organize networks of redistribution by __________.

Answer

Correct Answer: Collecting taxes

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20. People with rem behavior disorder ____.

Answer

Correct Answer: Move vigorously during REM, apparently acting out their dreams.

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21. Relative to a ph of 6, a ph of 4 has a ______.

Answer

Correct Answer: 100 times higher H+ concentration

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22. Plate tectonics has been responsible for instances of all of the following except ________.

Answer

Correct Answer: Sympatric speciation

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23. Penicillin interferes with __________________, causing bacteria to die from ______________.

Answer

Correct Answer: Cell wall synthesis, swelling and rupturing of the cell

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24. The enzyme _____ repairs 99% of mismatched bases immediately during replication.

Answer

Correct Answer: DNA polymerase

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25. The darker the skin of a person, the more likely that some of that person's ancestors _____.

Answer

Correct Answer: Were from a geographical area closer to the equator

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26. The correct order (from start to finish) of fracture repair is __________.

Answer

Correct Answer: Bony callus formation, hematoma formation, fibrocartilaginous callus formation, and bone remodeling

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27. The best area to check the adequacy of peripheral circulation is in the _______.

Answer

Correct Answer: Foot

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28. The basin and range region in the western united states is aptly named because _____.

Answer

Correct Answer: It contains many small mountain ranges with basins

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29. The basic bilaterian body form plan can be thought of as simply _____.

Answer

Correct Answer: A tube within a tube

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30. The base of the heart faces in the _____________ directions.

Answer

Correct Answer: Posterior and superior

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31. The av valves close in response to the ________________________.

Answer

Correct Answer: Contraction of the ventricles and the resulting rise in ventricular pressure

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32. The autonomic nervous system is subdivided into two branches called the _____ and _____ systems.

Answer

Correct Answer: Sympathetic parasympathetic

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33. Replacing lost blood volume with an isotonic saline solution ________.

Answer

Correct Answer: Lowers the patient's blood volume

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34. Ren descartes would be considered to hold a ________ view of the mind-body problem.

Answer

Correct Answer: Dualist

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35. Reefs grow best in _______.

Answer

Correct Answer: Shallow water

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36. Recent research suggests that there is a link between _______ and low-back pain.

Answer

Correct Answer: Smoking

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37. Rbcs are better known as ________ and wbcs are better known as ___________.

Answer

Correct Answer: Erythrocytes, leukocytes

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38. Rapid blood loss of ____ quart(s) or more in an adult can lead to shock and death.

Answer

Correct Answer: 2

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39. Pulmonary endo/scop/y is best used to _____________ diseases of the respiratory system.

Answer

Correct Answer: Dview and diagnose

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40. Pubic hair, breasts, facial hair, and deepening of the voice are called _____.

Answer

Correct Answer: Secondary sex characteristics

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41. Protein is _______ when carbohydrates are scarce.

Answer

Correct Answer: Burned for energy

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42. Protein coding genes specify the manufacture of ________ as their immediate product.

Answer

Correct Answer: MRNA

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43. Proteases digest _____, a nutrient found in foods.

Answer

Correct Answer: Protein

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44. Proliferation of lymphocytes occurs immediately after __________.

Answer

Correct Answer: Antigen encounter & activation

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45. Primary and secondary waves are _____ waves, and love waves are _____ waves.

Answer

Correct Answer: Back and forth

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46. People that will most likely be victims of peer pressure are __________.

Answer

Correct Answer: All of the above

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47. It is best to say that the protection to properties offered by sea walls along coasts _______.

Answer

Correct Answer: Decreases the present and future risk to human properties

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48. In the average adult, the sudden loss of ________ cc of blood is considered serious.

Answer

Correct Answer: 1,000

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49. In terms of structural materials, _______ is to plants what _______ is to lobsters and crabs.

Answer

Correct Answer: Cellulose; chitin

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50. In theory, each plaque on a plate corresponds to ___________________.

Answer

Correct Answer: One infective virus in the initial suspension.

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51. The chemical reaction illustrated in the accompanying figure _____.

Answer

Correct Answer: Results in a peptide bond

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52. The chief contributors of saturated fatty acids in the u.s. diet include ________.

Answer

Correct Answer: Animal products

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53. One way scientists can study human migration pathways is by using ____ pathways.

Answer

Correct Answer: DNA

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54. Sloths have less muscle than other mammals their size in order to _______.

Answer

Correct Answer: Conserve energy

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55. Urine, with a ph of 6, is _________ times more acidic than seawater, with a ph of 8.

Answer

Correct Answer: 100

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56. The nutrient standards used on nutrition facts panels are called ________.

Answer

Correct Answer: Daily Values

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57. The membrane potential is closest to the equilibrium potential for potassium at label _____.

Answer

Correct Answer: D

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58. The main functional unit, or super organism, of a honeybee hive is the __________.

Answer

Correct Answer: Colony.

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59. The frank-starling law of the heart is an ____________ property of heart muscle.

Answer

Correct Answer: Intrinsic

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60. Some neandertal physical characteristics may have arisen as adaptations to a ______ environment.

Answer

Correct Answer: Cold

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61. Shubin and daeschler specifically traveled to ellesmere island to hunt for fossils because _____.

Answer

Correct Answer: The rocks on the island were of the right age to contain transitional vertebrate fossils.

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62. S, the selection coefficient, is a relative measure of _________________

Answer

Correct Answer: Survival

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63. Ruvc endonuclease resolves holliday junctions according to a patch recombination model if ______?

Answer

Correct Answer: The cuts are on the same strand, and there is no crossover

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64. Cells are most stable in _________ environments?

Answer

Correct Answer: Isotonic

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65. Animals that can detect ultraviolet (uv) light differ from humans by having ________.

Answer

Correct Answer: UV-specific opsins that extend their visible light spectrum

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66. An important source of antioxidants is the ________ found in ________ .

Answer

Correct Answer: Phytochemicals; plants

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67. A hypothesis must be testable to be scientifically valid. being testable means that _____.

Answer

Correct Answer: Some conceivable observation or experiment could reveal whether a given hypothesis is incorrect

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68. ________ prohibits re-initiation of chromosome replication.

Answer

Correct Answer: SeqA

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69. ____ is a form of vigorous physical activity.

Answer

Correct Answer: Aerobic dancing

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70. _____ aid in the coordination of the activities of adjacent animal cells.

Answer

Correct Answer: Gap junctions

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71. Using body mass index (bmi), a bmi of ____ to _____ is defined as overweight.

Answer

Correct Answer: ​30; 45

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72. In a comparison of birds and mammals, the condition of having four limbs is __________.

Answer

Correct Answer: A shared ancestral character

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73. Human prenatal development takes ___ weeks.

Answer

Correct Answer: 38
44

Note: This question has more than 1 correct answers

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74. Caspases in mammals, which are similar to _______ in nematodes, are involved in _______.

Answer

Correct Answer: CED-3; apoptosis

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75. Bones are composed mostly of __________. a. magnesium b. vitamins c. calcium d. cartilage

Answer

Correct Answer: Calcium

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76. Based on this tree, the lineage leading to ________ was the first to diverge from the other lines.

Answer

Correct Answer: Mammals

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77. At the onset of the embryonic period, the _____ appears. it will eventually become the neural tube.

Answer

Correct Answer: Primitive streak

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78. Arteries are most accurately defined as blood vessels that ________.

Answer

Correct Answer: Carry blood away from the heart

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79. Archaea has no _________________. as a result, it is unable to form the 30 nm fiber of chromatin.

Answer

Correct Answer: Histone H1

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80. An ovum bursts from one of a womans two __________ and is drawn into one of two __________.

Answer

Correct Answer: Ovaries, Fallopian tubes

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81. An e. coli cell without a functional laci gene is expected to _____.

Answer

Correct Answer: Always produce β-galactosidase

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82. After a human sperm penetrates an egg, a fertilization envelope forms. this membrane _____.

Answer

Correct Answer: Prevents more than one sperm from entering the egg

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83. According to this figure, the amphibians are a _____ group.

Answer

Correct Answer: Monophyletic

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84. About ___________ babies born to mothers over 40 have ________.

Answer

Correct Answer: 1 out of 4; Down syndrome

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85. Unlike skeletal muscle action potentials, cardiac muscle action potentials __________.

Answer

Correct Answer: Involve calcium voltage-gated channels

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86. The variety of skin tones present in the world demonstrates ________________.

Answer

Correct Answer: Incomplete dominance

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87. A supplemental appendix is to a book as a ____________ is to a bacterial chromosome.

Answer

Correct Answer: Plasmid

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88. To help prevent the proliferation of antibiotic-resistant bacteria, you should __________.

Answer

Correct Answer: Take the full course of any antibiotics your doctor has prescribed

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89. The highlighted grouping in the cladogram is a ____________ grouping.

Answer

Correct Answer: Monophyletic

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90. The figure below illustrates ______.

Answer

Correct Answer: Alternative RNA splicing

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91. Speciation requires that two populations become _____ isolated from each other.

Answer

Correct Answer: Reproductively

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92. Wormlike lineages of lophotrochozoans are distinguished by specialized _____.

Answer

Correct Answer: Mouthparts or feeding structures

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93. The results of the meselson-stahl experiments relied on all of the following except _______.

Answer

Correct Answer: The fact that DNA is the genetic material

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94. The rate of ventricular conduction is best determined by the _______________________ on an ecg.

Answer

Correct Answer: The number of QRS complexes present within a specific unit of time

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95. The primary role of the phosphate buffer system is to __________.

Answer

Correct Answer: Buffer intracellular fluid (ICF)

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96. One group of reptiles, characterized by the fossil archaeopteryx, led to the evolution of _____.

Answer

Correct Answer: Evolution of Birds

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97. Of the following urinary system organs, major homeostatic functions are performed by the ________.

Answer

Correct Answer: Kidneys

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98. Ocean acidification is the result of cars releasing _______.

Answer

Correct Answer: Carbon dioxide that forms acid when it dissolves in water

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99. Obesity is defined as having a body mass index of ______ or higher.

Answer

Correct Answer: Overweight

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100. Moving through trophic levels _______.

Answer

Correct Answer: All of the above

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101. Most autistic individuals develop symptoms of the disorder ________.

Answer

Correct Answer: Before age three

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102. Lepirudin is a drug that inhibits thrombin. it will have an effect specifically on the __________.

Answer

Correct Answer: Common pathway of coagulation

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103. Large animals need specialized organs for gas exchange because ________.

Answer

Correct Answer: Volume increases more rapidly than surface area as size increases.

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104. Gene families are groups of _______ genes that arose by _______ and _______.

Answer

Correct Answer: Homologous; gene duplication; sequence evolution

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105. Fish rely on coral for _______.

Answer

Correct Answer: All of the above

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106. An experiment looking at structures smaller than a cell would most likely employ a _______.

Answer

Correct Answer: Transmission electron microscope

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107. Action potentials occur ____________________________.

Answer

Correct Answer: In the unmyelinated regions of an axon

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108. A regulatory process called _____ helps you maintain your baseline body weight.

Answer

Correct Answer: Energy homeostasis

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109. A person experiencing dizziness after using a strong household cleaner is illustrating ____.

Answer

Correct Answer: An acute effect

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110. A means of controlling sex offenders has involved reducing ____.

Answer

Correct Answer: Testosterone levels

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111. A man who carries an allele of an x-linked gene will pass it on to _____.

Answer

Correct Answer: All of his daughters

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112. To reconstruct phylogenies, biologists use the __________ method.

Answer

Correct Answer: This information is used in all fields of biology to

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113. The statement "dna rna proteins" ________.

Answer

Correct Answer: Is known as central dogma

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114. Some viruses cause abnormal growth of cells rather than destruction. this is called __________.

Answer

Correct Answer: Transformation

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115. Human cancer causing viruses most often have a ___________ genome.

Answer

Correct Answer: DsDNA

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116. During the illumina sequencing reaction, ______________

Answer

Correct Answer: When a nucleotide with reversible terminator is incorporated into the growing chain and a florescent signal is produced.

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117. A multivitamin supplement is a(n) ___________ supplement.

Answer

Correct Answer: Micronutrient

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118. 66. "fluoroscopy" is used to record ________:

Answer

Correct Answer: Moving body parts

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119. A typical oil control ring consists of _______ separate part(s).

Answer

Correct Answer: Two.

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120. The u.s. teen birth rate is __________ to the other developed nations of the world.

Answer

Correct Answer: The highest compared

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121. Climate and sea-level changes caused by the formation of the supercontinent pangaea _____.

Answer

Correct Answer: Were a significant factor leading to the Permian mass extinctions of terrestrial and marine life

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122. Sacred rituals that are especially important in the veneration of ancestors are called __________.

Answer

Correct Answer: Lib

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123. Dallol is located on the edge of the _____________.

Answer

Correct Answer: The Danakil Depression in the northern part of the Afar triangle of Ethiopia.

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124. _____________ residues act as an address for delivery of proteins to lysosomes

Answer

Correct Answer: Mannose 6-phosphate

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125. Scientists from russia and japan are attempting to resurrect the extinct woolly mammoth __________.

Answer

Correct Answer: By using well-preserved bone marrow from the thigh of a frozen mammoth

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126. The heaviest and fastest of all the small wildcats is the _______.

Answer

Correct Answer: Caracal

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127. The u.s. joint global ocean flux study was aimed at understanding _______.

Answer

Correct Answer: The ocean carbon cycle

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128. Today, north america has several small- to medium-sized plates subducting beneath its ____________.

Answer

Correct Answer: Western margin

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129. A(n) ____________ acts to increase the hydrogen ion concentration of a solution.

Answer

Correct Answer: Acid

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130. Behaviorists believe that psychologists should focus on _____.

Answer

Correct Answer: Observable behaviors

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131. Hull fouling is a(n) _______ introduction of nonnative species.

Answer

Correct Answer: Unintentional

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132. Using nuclear transplantation, it is possible to generate __________ for therapeutic uses.

Answer

Correct Answer: Blastocysts

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133. Nonreplicative transposition occurs by breakage and reunion when_____?

Answer

Correct Answer: The crossover complex is nicked at the unbroken pair of donor strands.

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134. Mount saint helens represents an example of __________, which began with a __________.

Answer

Correct Answer: Primary succession; volcanic eruption

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135. Most taste buds are made of __________ types of modified epithelial cells.

Answer

Correct Answer: Two

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136. Most cases of encephalitis _____.

Answer

Correct Answer: Mild and require no specific treatment.

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137. The order ___________ is responsible for vectoring trench fever.

Answer

Correct Answer: Phthiraptera.

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138. According to ernest hilgard, hypnosis is the result of __________.

Answer

Correct Answer: The effects of a hidden observer in the unconscious

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139. Foodborne illnesses typically result primarily in ________ signs and symptoms.

Answer

Correct Answer: Gastrointestinal

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140. Competitive athletes train at __________ of estimated maximal heart rate.

Answer

Correct Answer: 80-95%

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141. Fluctuations in the phosphorus cycle in aquatic ecosystems _______.

Answer

Correct Answer: Can lead to changes in the growth rates of aquatic populations

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142. Climax communities __________________communities that are undergoing primary succession.

Answer

Correct Answer: Are usually more rich in species biodiversity than

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143. The teeming diversity of animals in the rain forest has led to _____.

Answer

Correct Answer: Species specialization

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144. Solid fats have a high proportion of _____.

Answer

Correct Answer: Saturated fatty acids

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145. Within eukaryotic cells, there is an intricate network of _______ with unique functions.

Answer

Correct Answer: Organelles

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146. Which of the following is a property of liquid water? liquid water _____.

Answer

Correct Answer: Has a heat of vaporization that is higher than that for most other substances

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147. Water currents along the coastline of chile pull up deep water that is __________.

Answer

Correct Answer: Cold and high in nutrients

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148. Various persons or groups with a legitimate interest in a company's actions are called ____.

Answer

Correct Answer: Stakeholders

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149. Two features of ray-finned fish not found in sharks are _____.

Answer

Correct Answer: A swim bladder and opercula

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150. Turning off a respirator or a heart-lung machine is an example of _____ euthanasia.

Answer

Correct Answer: Active

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151. Tropical ocean waters are more saline than colder waters because tropical waters _____.

Answer

Correct Answer: Evaporate more rapidly

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152. Traffickers look for victims in vulnerable situations such as ________. select all that apply.

Answer

Correct Answer: Politically unstable countries.

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153. Together, sewage treatment and drinking water treatment are used to _____.

Answer

Correct Answer: Reduce the risk of waterborne diseases

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154. There are more species of ______ than of any other type of animal.

Answer

Correct Answer: Arthropods

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155. The source of most of the energy we use today is _____. fossil fuels geothermal nuclear biomass

Answer

Correct Answer: Fossil fuels

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156. The prefix ana- means _________; the opposite of ana- is _____.

Answer

Correct Answer: Up or apart, cata-

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157. The place within a replication bubble where replication is actually occurring is called a _____.

Answer

Correct Answer: Replication fork.

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158. The nuclear envelope disintegrates during _____. metaphase prophase anaphase telophase

Answer

Correct Answer: Pho phase.

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159. The lock-and-key analogy for enzymes applies to the specificity of enzymes _____.

Answer

Correct Answer: Binding to their substrate

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160. The aspect of hearing that declines most significantly in midlife is the ability to __________.

Answer

Correct Answer: Hear high-pitched sounds

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161. The animal rights movements in society evolved from ________.

Answer

Correct Answer: Biocentric ethics

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162. The amount of carbon removed by forests in the united states each year is equal to _______.

Answer

Correct Answer: 3390 semi-trucks full of carbon

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163. The absorption of the majority of ingested nutrients takes place largely in the __________.

Answer

Correct Answer: Small intestine

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164. The pyelogram records information about the _____:

Answer

Correct Answer: Kidney pelvis

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165. The decision for a neuron to fire is determined by the ____.

Answer

Correct Answer: ​ratio of EPSPs to IPSPs

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166. The ___________________ propelled flowering plants to an explosive adaptive radiation.

Answer

Correct Answer: Evolutionary innovation of the flower

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167. The ____________ exhibit receipt and association of general body sensations.

Answer

Correct Answer: Partietal lobes

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168. The ___________ lies directly behind the _________. these two regions are "twins."

Answer

Correct Answer: Somatosensory cortex; motor cortex

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169. The __________ is the maximum drug effect, regardless of dose.

Answer

Correct Answer: Plateau effect

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170. The __________ creed signifies the belief in the father, the son, and the holy spirit.

Answer

Correct Answer: Apostle's

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171. The ___ method of anthropology is useful in many different work settings.

Answer

Correct Answer: Observation.

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172. Surveys indicate most adults in middle adulthood are afraid of having __________.

Answer

Correct Answer: Cancer

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173. Sound waves arriving at a listener first strike the _____.

Answer

Correct Answer: Tympanic membrane

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174. Some antibiotics interfere with bacterial ribosomes by _____ protein synthesis.

Answer

Correct Answer: Interfering with bacterial

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175. Sexual reproduction relies on ________ and cell growth and repair rely on _______.

Answer

Correct Answer: Meiosis, Mitosis

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176. Sedimentary rocks with ripple marks suggest that the rocks formed _____.

Answer

Correct Answer: Along a beach or stream bed

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177. Scientific experimentation is important in that it allows the experimenter to __________.

Answer

Correct Answer: Reject some alternative hypotheses

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178. Savanna is considered a transitional biome because it is intermediate between two _______.

Answer

Correct Answer: Biomes

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179. Salinization increases the concentration of _______ in soil.

Answer

Correct Answer: Salt

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180. Rods are to cones as _____ is (are) to _____.

Answer

Correct Answer: Peripheral vision and night vision

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181. Nodes of _____ are gaps in the _____ that coat some axons.

Answer

Correct Answer: Ranvier; myelin

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182. Negative feedback is a method of homeostatic control that __________.

Answer

Correct Answer: Increases the speed and rapidity of negative responses to environmental stimuli

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183. Natural selection drives changes in allele frequencies by influencing traits with a ____ basis.

Answer

Correct Answer: Genetic

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184. Much of the original forest cover on madagascar has been destroyed primarily as a result of _____.

Answer

Correct Answer: Burning for agricultural purposes

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185. Most mutagens are carcinogens. this is because __________.

Answer

Correct Answer: Both bring about cancer-causing DNA changes

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186. Most _______ are secreted into the extracellular fluid from endocrine glands or tissues.

Answer

Correct Answer: Hormones

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187. Long before humans invented it to power aircraft, jet propulsion evolved in _____.

Answer

Correct Answer: Cephalopod mollusks

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188. Lack of body fluids is to thirst as ________ is to ________.

Answer

Correct Answer: Need; drive

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189. In a typical stream, where the gradient is steep, the discharge is _____.

Answer

Correct Answer: Small

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190. In a municipal wastewater treatment plant, the primary treatment step includes ________.

Answer

Correct Answer: Letting sewage sit in large settling tanks so suspended solids settle out

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191. In a complete flower, a(n) _____is found on a filament and a(n) _______ is found on a(n) _______.

Answer

Correct Answer: Anther; stigma; style

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192. Images that fall on the optic __________ are not visible because this area lacks rods and cones.

Answer

Correct Answer: Disk

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193. If you randomly removed a somatic cell from the human body, odds are that it would ________.

Answer

Correct Answer: Have 46 chromosomes

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194. If the protein retinoblastoma is ________, it can bind to and ________ the myc protein.

Answer

Correct Answer: Dephosphorylated ; inactivate

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195. If the figure represents a marine food web, zooplankton are most likely ________.

Answer

Correct Answer: C

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196. Humans use more fresh water for ________ than for any other purpose.

Answer

Correct Answer: Irrigating crops

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197. Humans are dependent on _______ for their food supply.

Answer

Correct Answer: Biomass

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198. Hospital outpatient programs and methadone clinics would be examples of __________ prevention.

Answer

Correct Answer: Tertiary

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199. Highway vehicles are responsible for ___% of the nox air emissions in the u.s.

Answer

Correct Answer: 38

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200. High-fat foods stimulate the appetite mostly because they ____.

Answer

Correct Answer: Are flavorful

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201. Her nervousness had a profound ______ on her ability to play the piano. it _______ me too.

Answer

Correct Answer: Affect / affected

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202. Hearing organs are housed within the ___________ in the inner ear.

Answer

Correct Answer: Cochlea

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203. Habituation and sensitization differ depending upon whether ____.

Answer

Correct Answer: The response grows weaker or stronger

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204. H.m. was able to learn and remember ____.

Answer

Correct Answer: Skills like mazes and puzzles

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205. Gold is opaque and reflective. it has a _____.

Answer

Correct Answer: Metallic luster

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206. Contraceptive pills mimic the ___________ feedback effect of ___________.

Answer

Correct Answer: Negative; and estrogens progesterone

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207. Characters traits can be discovered by analyzing __________.

Answer

Correct Answer: Characterization

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208. Cells were first identified as robert hooke observed _____.

Answer

Correct Answer: Cork

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209. Cells having matched pairs of chromosomes are _____.

Answer

Correct Answer: Diploid

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210. Bed-wetting is most likely to occur at the end of ________ sleep.

Answer

Correct Answer: Slow-wave

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211. Because of the property of paleomagnetism, _____.

Answer

Correct Answer: Records of the Earth's magnetic field in rocks have been studied

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212. Because of plate tectonics, about 250 million years ago __________.

Answer

Correct Answer: All the landmasses were united in one supercontinent, the Pangaea

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213. Axons are necessary for neurons to be able to ____.

Answer

Correct Answer: Send neural impulses to other neurons

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214. Atp hydrolysis directly powers the movement of _____.

Answer

Correct Answer: Na+out of cells

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215. As heat and pressure increase, ductile deformation _____.

Answer

Correct Answer: Becomes less likely

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216. As energy is transferred among organisms, some escapes from the environment as ____ energy.

Answer

Correct Answer: Heat

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217. As alexander fleming knew, most bacteria fall into one of _____ categories.

Answer

Correct Answer: Two

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218. As a result of the punic wars rome __________

Answer

Correct Answer: Won control over the western Mediterranean

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219. As a result of a severe disturbance, a community will ________.

Answer

Correct Answer: Undergo succession

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220. Antibiotic resistance evolves in bacteria when ________.

Answer

Correct Answer: The presence of antibiotics favors bacteria that already have genes for resistance

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221. Another term for tympanitis (inflammation of the middle ear) is ___________/itis media.

Answer

Correct Answer: Ot

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222. An individual who carries staph but isn't sick is referred to as _______.

Answer

Correct Answer: Colonized

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223. An appropriate way to close an unsolicited proposal is to _____.

Answer

Correct Answer: Request a meeting

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224. An abnormal plantar reflex in an adult produces babinski's sign, which indicates ________.

Answer

Correct Answer: Damage to the corticospinal tract

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225. Amino acids are needed to build ________, just as ________ are needed to create dna.

Answer

Correct Answer: Protein; nucleotides

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226. Alpha-linolenic acid and linoleic acid are classified as _________ fatty acids.

Answer

Correct Answer: Essential

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227. All of the following are issues with lesioning except its __________.

Answer

Correct Answer: Availability of technology

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228. All genes are composed of specific sequences of ___________ molecules.

Answer

Correct Answer: DNA

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229. All dna polymerases synthesize new dna by adding nucleotides to the _____ of the growing dna chain.

Answer

Correct Answer: 3′ OH

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230. Albumin in the urine can indicate _____ of the urinary tract, particularly the glomeruli.

Answer

Correct Answer: Obstruction.

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231. Agonists bind to ________ and antagonists bind to ________.

Answer

Correct Answer: Receptors; nothing.

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232. Agnes has heartburn, which is also called ____.

Answer

Correct Answer: Pyrosis

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233. Agglutinogens are contained on the __________, whereas the agglutinins are found in the __________.

Answer

Correct Answer: Cell membrane of the RBC; plasma

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234. Agents generating mutation-inducing dna damage are collectively referred to as ________.

Answer

Correct Answer: Mutagens

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235. After the migrating neuron reaches its destination, ____ begin to form.

Answer

Correct Answer: Dendrites

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236. After receiving a reward for escaping the puzzle box, the cats ________.

Answer

Correct Answer: Gradually learned to escape more quickly

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237. After drinking alcoholic beverages, increased urine excretion is the result of _____.

Answer

Correct Answer: Inhibited secretion of antidiuretic hormone (ADH)

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238. After an economy has reached its peak, it begins the ______ phase of the business cycle.

Answer

Correct Answer: Contraction

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239. Advantages of using algae as a biofuel include _______. select all that apply.

Answer

Correct Answer: All of these

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240. Adherence to the intestinal lining by this bacterium is due to its possession of _____.

Answer

Correct Answer: A capsule

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241. Adenosine triphosphate, or atp, is primarily used as _______ in living organisms.

Answer

Correct Answer: A source of energy

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242. Accumulation of undigested molecules would most directly be an indication of _____ dysfunction.

Answer

Correct Answer: Mitochondrial

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243. According to lecture, ________ had the highest rate of pathogenic weight practices.

Answer

Correct Answer: Gymnasts

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244. About one in ____ individuals diagnosed with an eating disorder is male.

Answer

Correct Answer: 10

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245. A placenta and viviparity are most likely adaptations for increasing ______.

Answer

Correct Answer: Parental care and offspring survival

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246. A pine tree is a _____.

Answer

Correct Answer: Gymnosperm

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247. ____________ metamorphic rocks have mineral grains that line up in parallel layers.

Answer

Correct Answer: Foliated

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248. _______ is an indicator of programmed cell death.

Answer

Correct Answer: Fragmented chromatin

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249. ______ are responsible for toxic red tides.

Answer

Correct Answer: Dinoflagellates

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250. _____ stimulates the release of norepinephrine and dopamine and also blocks their reuptake.

Answer

Correct Answer: Amphetamine

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251. _____ is associated with the fearless-peer experiment. the experiment demonstrates _____.

Answer

Correct Answer: Bandura; observational learning

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252. _____ describes why similar organisms do not interbreed because of a physical barrier.

Answer

Correct Answer: Allopatric speciation

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253. The gill flap, or operculum, was an important adaptation for fish because it helps with __________.

Answer

Correct Answer: Maintaining a supply of oxygen

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254. Human body cells are approximately ______ water.

Answer

Correct Answer: 70—95%

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255. Both prokaryotic and eukaryotic cells use ________ to turn certain genes on or off.

Answer

Correct Answer: Proteins

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256. To stay abstinent, one should __________.

Answer

Correct Answer: Practice refusal skills

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257. The kingdom described in "the lady, or the tiger?" is _____.

Answer

Correct Answer: Actual mythical an ancient city which has since been destroyed.

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258. The variation in shape and function of the forelimb in tetrapods is a result of _____.

Answer

Correct Answer: Different environments leading to the evolution of different types of limbs

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259. The reduction division of meiosis specifically occurs at ________.

Answer

Correct Answer: Meiosis I

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260. The parasympathetic division is also called the ________ division.

Answer

Correct Answer: Craniosacral -

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261. The membrane potential is hyperpolarized at label ________.

Answer

Correct Answer: When the line goes under the starting point

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262. The scientific explanation for global warming is very dependent on the _______ atom.

Answer

Correct Answer: Carbon

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263. The gd mat on the fur of the bats should be expected to consist of _____.

Answer

Correct Answer: Hyphae.

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264. Metabolic acidosis results in _______.

Answer

Correct Answer: Hyperventilation

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265. Storage forms of glucose in living things include _____.

Answer

Correct Answer: Glycogen and starch

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266. The fuel used to run our cars contains _______ energy

Answer

Correct Answer: Potential

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267. The cracking of rock due to heat is an example of _______.

Answer

Correct Answer: Physical weathering

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268. Sensory information that arrives at the cns is routed according to the ________ of the stimulus.

Answer

Correct Answer: Both A and C

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269. Secondary hypertension ____________________. select all that apply.

Answer

Correct Answer: Is due to the presence of another disease, such as Cushing's syndrome.

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270. Cutting the left optic nerve in front of the optic chiasm would result in blindness in the ____.

Answer

Correct Answer: Left eye

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271. During weeks 17-20, quickening occurs, which is when the __________.

Answer

Correct Answer: Mother is able to feel the fetus move inside her womb

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272. The body fluids of an osmoconformer would be ________ with its ________ environment

Answer

Correct Answer: Isoosmotic; saltwater

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273. Opportunistic species typically ______.

Answer

Correct Answer: Have a large number of offspring

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274. In the myogenic response, ________.

Answer

Correct Answer: Vascular smooth muscle responds to stretch

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275. (intro) the amount of life on the ocean floor depends primarily on _________.

Answer

Correct Answer: The productivity of the surface layer above it

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276. The most active form of ____________ is called calcitriol.

Answer

Correct Answer: Vitamin D

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277. The most important feature that permits a gene to act as a molecular clock is _____.

Answer

Correct Answer: A reliable average rate of mutation

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278. What was an early selective advantage of a coelom in animals? a coelom _____.

Answer

Correct Answer: Contributed to a hydrostatic skeleton, allowing greater range of motion

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279. Unikonta is a supergroup that includes all of the following except _____.

Answer

Correct Answer: Plants

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280. Uniform spacing patterns in plants such as the creosote bush are most often associated with _____.

Answer

Correct Answer: Competitive interaction between individuals of the same population

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281. The evolution of eukaryotic cells most likely involved _____.

Answer

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

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282. Industrial ecologists ________.

Answer

Correct Answer: Redesign industrial systems to maximize physical and economic efficiency

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283. Ddt, dde, pcbs, and pbdes are all ________.

Answer

Correct Answer: Non-biodegradable and subject to bioaccumulation and/or biomagnification

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284. Copernicus proposed a heliocentric model for the solar system primarily because ________.

Answer

Correct Answer: It was much simpler than the Ptolemaic model

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285. To recycle nutrients, an ecosystem must have, at a minimum, _____.

Answer

Correct Answer: Producers and decomposers

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286. The tract that carries sensations from muscle spindles to the cns is the __________.

Answer

Correct Answer: Spinocerebellar

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287. The target organ of oxytocin is the smooth muscle of the _____.

Answer

Correct Answer: Uterus

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288. The structural framework of a blood clot is formed by __________.

Answer

Correct Answer: A fibrin polymer

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289. The redundancy of the genetic code is a consequence of ______.

Answer

Correct Answer: Having more codons than amino acids

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290. The primary difference between enhancers and promoter-proximal elements is that enhancers _____.

Answer

Correct Answer: Are at considerable distances from the promoter; promoter-proximal elements are close to the promoter

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291. The behavior of an infant in sensorimotor stage four might best be described as _____.

Answer

Correct Answer: Deliberate

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292. According to the fossil record, plants colonized terrestrial habitats ________.

Answer

Correct Answer: In conjunction with fungi that helped provide them with nutrients from the soil

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293. Feedlots are a major cause of _________ in water.

Answer

Correct Answer: All of these choices are correct

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294. The first stage of embryonic development is _____. this process produces _____.

Answer

Correct Answer: Cleavage ... a cluster of cells

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295. In fetal circulation the descending aorta carries the less oxygenated blood from the _________.

Answer

Correct Answer: Ductus arteriosus.

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296. In a newly fertilized egg, the vitelline layer _____.

Answer

Correct Answer: Lifts away from the egg and hardens to form a fertilization envelope

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297. In a comparison of birds and mammals, having four limbs is _____.

Answer

Correct Answer: A shared ancestral character

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298. Examine the evolutionary tree below. this tree tells us that the amnion is found in ______.

Answer

Correct Answer: Mammals, lizards, snakes, crocodiles, and birds

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299. Cleavage as part of embryonic development is distinctive because it involves ________.

Answer

Correct Answer: Cell division by mitosis with little or no growth between successive divisions

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300. As cleavage continues, a zygote forms into a solid multicellular ball called a(n) _____.

Answer

Correct Answer: Morula

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301. A blastomere is a _____ and a blastocyst is _____.

Answer

Correct Answer: Cell produced by cleavage; a hollow ball of cells

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302. When bapna is hydrolyzed, it _______.

Answer

Correct Answer: Changes from colorless to yellow

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303. The decidua basalis is ________.

Answer

Correct Answer: Located between the developing embryo and the myometrium

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304. Early work on signal transduction and glycogen metabolism by sutherland indicated that __________.

Answer

Correct Answer: The signal molecule did not interact directly with the cytosolic enzyme, but required an intact plasma membrane before the enzyme could be activated

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305. Almost all animals except _____ have either radial or bilateral symmetry.

Answer

Correct Answer: Sponges

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306. The three most abundant classes of nutrients are __________.

Answer

Correct Answer: Fats, proteins, and carbohydrates

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307. The term polytomy refers to a situation in which __________.

Answer

Correct Answer: A branch point within a phylogenetic tree represents the most recent common ancestor

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308. The primitive streak in a bird is the functional equivalent of _____.

Answer

Correct Answer: The blastopore in the frog

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309. The outer-to-inner sequence of tissue layers in a post-gastrulation vertebrate embryo is _____.

Answer

Correct Answer: Ectoderm → mesoderm → endoderm.

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310. The notochord functions as a core around which mesodermal cells form the frog's _____.

Answer

Correct Answer: Backbone.

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311. The mesoderm gives rise to _____

Answer

Correct Answer: Skeletal and muscular systems

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312. The domain eukarya contain(s) ______ kingdom(s).

Answer

Correct Answer: Four.

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313. In the five-kingdom system, prokaryotes are placed in the kingdom _____.

Answer

Correct Answer: Monera

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314. During gastrulation in frogs, a rod of mesoderm under the dorsal surface forms the _____.

Answer

Correct Answer: Notochord

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315. Birds reptiles and mammals are called amniotes because _____

Answer

Correct Answer: They have extra-embryonic membranes that develop an aqueous environment in which development occurs

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316. At the moment of sperm penetration, human eggs _____.

Answer

Correct Answer: Are still surrounded by follicular cells

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317. An embryonic cell that is "totipotent" is one that can _____.

Answer

Correct Answer: By itself, give rise to the entire embryo, as cleavage proceeds

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