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
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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.
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.
The interaction of sympathetic and parasympathetic
systems is best described as a. antagonistic. b. cooperative. c. overriding. d. synergistic. e. ineffective.
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