On a hot, dry day a plant closes its stomata
thereby conserving water. Which plant
hormone is responsible for the closing of the
stomata?
a. auxin
b. gibberellin
c. ethylene
d. cytokinin
e. abscisic acid
E
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The insertion of a skeletal muscle is
(a) attached to the less mobile portion of the skeleton. (b) attached to the portion of the skeleton that moves when the muscle contracts. (c) never attached to the skeleton. (d) its belly.
All of the following are stages of hemostasis in
minor injuries EXCEPT a. the vascular phase. b. when platelets stick at infected site. c. the coagulation phase. d. the polyfibrosemic phase. e. when thrombin starts the clotting process.
In eukaryotes, translation takes place
A. on spliceosomes. B. on the plasma membrane. C. on the nuclear membrane. D. on ribosomes. E. inside the nucleus.
Which of the following is a type of cytopathic effect?
A. inclusions in the nucleus B. rounding of cells C. inclusions in the cytoplasm D. multinucleated giant cells E. All of these choices are correct.