What will be the effect of a drug that prevents the release of intracellular calcium?
a. a decreased number of IPSPs
b. a decreased number of EPSPs
c. a prolonged hyperpolarization
d. increased neurotransmitter release
e. decreased neurotransmitter release
ANSWER: e
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When gibberellin binds to its receptor, what happens to activate the gibberellin-dependent transcription factor GA-TRXN?
A. Ethylene is released. B. A ubiquitin tag is used to degrade the GA-TRXN inhibitor. C. A DELLA protein is degraded, freeing the GA-TRXN. D. A DELLA protein is attached to GA-TRXN to activate it. E. The gibberellin is transferred to an alternate binding site.
An animal that is evolved for rapid movement over the ground will have relatively ____ bones
a. heavy and thick
b. heavy c. light and thin d. light e. heavy and thin
The anterior pituitary hormone which has a generalized effect, having receptors on almost every cell in
the body, is
a. prolactin. b. growth hormone. c. gonadotropin. d. ADH. e. ACTH.
Which of the following is used as an electron carrier by living organisms?
A. NADP+ B. Ubiquinone C. NAD+ D. All of the choices are correct.