When an impulse passes from one neuron to the next,
it
a. passes directly from dendrite to axon.
b. passes from axon to cell body to dendrite.
c. bypasses the cell bodies of both.
d. passes from the output zone of one to the input
zone of the other.
e. undergoes repolarization.
Answer: d
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Following a disturbance, the process by which species replace each other over time is called ____
Fill in the blank with the appropriate word.
Heterozygotes for the sickle cell trait have an adaptive advantage in areas where malaria is prevalent. This is an
example of ____.
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