In the experiment with Peacock butterflies, the

working hypothesis is that
a. mimicry confuses both predator and prey.
b. mimicry conveys a selective advantage to the
prey.
c. birds are capable of learning.
d. birds are agents of evolution.
e. unpalatable species display distinctive wings.


Answer: b

Biology & Microbiology

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A molecule binds and blocks the active site of an enzyme so that there can be no normal binding between the enzyme and its substrate. This molecule is called a(n) ___________.

a. irreversible inhibitor b. uncompetitive inhibitor c. reversible inhibitor d. competitive inhibitor e. none of the above.

Biology & Microbiology

Which of the following was demonstrated by the Miller-Urey experiment? 

A. Life began in the oceans. B. Life can be started experimentally in the laboratory. C. Organic molecules important to life could have been formed from a vast array of simple chemicals. D. Life began on the pre-biotic Earth 3.5 billion years ago.

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The interaction of sympathetic and parasympathetic

systems is best described as a. antagonistic. b. cooperative. c. overriding. d. synergistic. e. ineffective.

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The synthesis of thyroid hormone under normal circumstances is stimulated by;

a) High TSH b) High TRH c) Low T3 d) Low T4 e) All of the above

Biology & Microbiology