Campbell Biology MCQ
1. Fossils found in strata reveal that ________.
Answer
Correct Answer:
Older strata carry fossils that differ greatly from living organisms
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2. During fertilization, the acrosomal contents _____.
Answer
Correct Answer:
Digest the protective jelly coat on the surface of the egg
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3. The decline of mpf activity at the end of mitosis is due to _____.
Answer
Correct Answer:
The degradation of cyclin
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4. Sutherland discovered that the signaling molecule epinephrine _____.
Answer
Correct Answer:
Elevates cytosolic concentrations of cyclic AMP
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5. 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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6. 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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7. 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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8. The binomial system assigns to each organism a unique name that describes its __________.
Answer
Correct Answer:
Genus and species
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9. 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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10. Molecular systematics might include all of the following except ______.
Answer
Correct Answer:
Anatomical similarities
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11. The multicellular condition of animals and fungi seems to have arisen _____.
Answer
Correct Answer:
By convergent evolution.
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12. The molecule camp directly activates __________.
Answer
Correct Answer:
Protein kinase A
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13. The calvin cycle requires ______ and ______ from the light-dependent reactions in order to operate.
Answer
Correct Answer:
ATP . . . NADPH
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14. The natural human connection to nature and other forms of life is called __________.
Answer
Correct Answer:
Biophilia
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Biology MCQs | Topic-wise
