Graded potentials:
A)produce an effect that increases with distance from the point of stimulation.
B)may cause either depolarization or hyperpolarization.
C)produce an effect that spreads actively across the membrane surface.
D)cause repolarization.

Question

Quizplus · Accepted Answer

Graded potentials may cause depolarization (i.e. decrease in the membrane potential) or hyperpolarization (i.e. increase in the membrane potential), depending on the nature of the stimulus. Graded potentials do not increase with distance from the point of stimulation (choice A), nor do they actively spread across the membrane surface (choice C). Graded potentials may contribute to repolarization, but they do not cause repolarization in and of themselves (choice D is incorrect).

Graded Potentials