A drug that specifically inhibits voltage-gated calcium channels would most directly inhibit
A) depolarization of nerve cell membranes.
B) repolarization after depolarization of nerve cell membranes.
C) hyperpolarization of nerve cell membranes.
D) presynaptic neurotransmitter release.
E) postsynaptic receptor signal response.
Ans: D) presynaptic neurotransmitter release.
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Answer the following statement true (T) or false (F)
Side A is __________ to side B
a. hypertonic b. hypotonic c. isotonic d. either isotonic or hypertonic e. either isotonic or hypotonic
Primary xylem and phloem are produced by the
A. protoderm. B. procambium. C. leaf primordial. D. proembryo. E. ground meristem.
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