A viticulturist wants to grow larger grapes. Which specific hormone would a viticulturist apply to the plants?

A. cytokinin
B. ethylene
C. gibberellin
D. abscisic acid
E. auxin


Answer: C

Biology & Microbiology

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The ability of glucose to repress the lac operon depends on which of the following effector molecules?

A. allolactose B. cAMP C. tryptophan D. ADP E. starch

Biology & Microbiology

The "electrochemical gradient" that determines how a charged ion will move through a permeable membrane depends on

A. the electrical forces acting on that ion. B. the difference in concentration of that ion on either side of the membrane. C. the ratio between the charge on the ion and its atomic mass. D. the combined effects of electrical forces and concentration differences across the membrane. E. All of the choices for this question are correct.

Biology & Microbiology

To grow roses commercially, which growing conditions would be optimal?

What will be an ideal response?

Biology & Microbiology

The structure labeled "A" is the

a. aorta. b. inferior vena cava. c. pulmonary artery. d. pulmonary vein. e. superior vena cava

Biology & Microbiology