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Biology MCQ

Fossils found in strata reveal that ________.

Answer

Correct Answer: Older strata carry fossils that differ greatly from living organisms

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During fertilization, the acrosomal contents _____.

Answer

Correct Answer: Digest the protective jelly coat on the surface of the egg

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

Answer

Correct Answer: The degradation of cyclin

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Sutherland discovered that the signaling molecule epinephrine _____.

Answer

Correct Answer: Elevates cytosolic concentrations of cyclic AMP

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Prior to the work of lyell and darwin, the prevailing belief was that earth is _____.

Answer

Correct Answer: A few thousand yr old (6000) and unchanging

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Normally, only female cats have the tortoiseshell phenotype because _____.

Answer

Correct Answer: A male inherits only one allele of the X-linked gene controlling hair color

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

Answer

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

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The binomial system assigns to each organism a unique name that describes its __________.

Answer

Correct Answer: Genus and species

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Researchers can use molecular homologies to __________.

Answer

Correct Answer: Reveal the number of mutations in a particular sequence that has occurred in each species since

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Molecular systematics might include all of the following except ______.

Answer

Correct Answer: Anatomical similarities

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The multicellular condition of animals and fungi seems to have arisen _____.

Answer

Correct Answer: By convergent evolution.

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The molecule camp directly activates __________.

Answer

Correct Answer: Protein kinase A

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

Answer

Correct Answer: ATP . . . NADPH

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The natural human connection to nature and other forms of life is called __________.

Answer

Correct Answer: Biophilia

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