Voltage-gated channels contain charged protein domains, which are sensitive to c

Question

Voltage-gated channels contain charged protein domains, which are sensitive to changes in membrane potential. By responding to a threshold in the membrane potential, these voltage sensors trigger the opening of the channels. Which of the following best describes the behavior of a population of channels exposed to such a threshold?
a. Some channels remain closed and some open completely
b. all channels open completely
c. all channels open partly, to the same degree
d. all channels open partly, each to a different degree

Explanation / Answer

c. all channels open partly, to the same degree

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