Which of the following is mismatched?
A. Cytokinin—inhibits lateral root formation
B. Auxin—promotes cell enlargement
C. Gibberellin—involved in phototropism and gravitropism
D. Abscisic acid—promotes stomatal closure
E. Ethylene—promotes seasonal leaf abscission
Answer: C
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Examine the figure above. In the continental U.S., the dark green patches show areas with the highest bird species richness. What best explains why these areas have such diversity?
A. These areas have the highest temperatures in the continental U.S.
B. These areas have mountainous terrain.
C. These areas have well-protected natural areas.
D. These areas have low frequencies of extreme weather events and fire.
____ is a regulatory protein that slows the
production of muscle proteins.
a. Actin b. Myosin c. Troponin d. Testosterone e. Myostatin
How many different types of chromosomes do humans possess?
A. 22 B. 23 C. 24 D. 42 E. 46
If glucose is the sole energy source, what fraction of the carbon dioxide exhaled by animals is generated by the reactions of the citric acid cycle?
A) 1/6 B) 1/3 C) 2/3 D) all of it