Action potentials ____
a. can move up or down an axon, away from or towards the cell body
b. move in a one way direction towards the cell body
c. move in a one way direction away from the cell body
d. can jump from cell to cell
e. occur only once
ANSWER: c
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Synaptic vesicles discharge their contents by exocytosis at the
A. dendrite. B. axon hillock. C. nodes of Ranvier. D. postsynaptic membrane. E. presynaptic membrane.
__________ lengthen stems, break dormancy in
seeds and buds, and stimulate flowering. Fill in the blank(s) with the appropriate word(s).
Dikaryotic cells are denoted as _____ rather than _____ because there are two separate haploid nuclei
a. n; 2n b. 2n; n + n c. n + n; 2n d. n + n; n e. n ? n; n + n
The Whittaker classification is based upon all of the following EXCEPT
A. type of cell B. level of organization C. type of nutrition D. habitat