Graded potentials can result in either depolarization or hyperpolarization, depending on the type of ion channels that are activated and the ions that flow through them. They are not all-or-none, do not cause repolarization, and their effect decreases with distance from the point of stimulation. They spread passively, not actively, across the membrane.

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Graded Potentials

Question 46

Multiple Choice

Graded potentials

A) are often all- or- none.
B) cause repolarization.
C) produce an effect that increases with distance from the point of stimulation.
D) may be either a depolarization or a hyperpolarization.
E) produce an effect that spreads actively across the membrane surface.

Correct Answer: