Match the terms to changes presented, assuming a resting membrane potential of -70 mV.Answers may be used once, more than once, or not at all.
-to -50 mV from resting potential
A)electrical polarization
B)hyperpolarization
C)depolarization
D)repolarization
E)more than one of the answers

Question

Quizplus · Accepted Answer

Depolarization refers to a change in the membrane potential where the inside of the cell becomes less negative, or more positive, relative to the outside. If the resting potential is -70 mV and the level reaches -50 mV, this indicates a depolarization event.

Answer: E
 Both A and D could also be correct, depending on the context. Electrical polarization refers to any change in the distribution of charges across the cell membrane, which could include both depolarizing and hyperpolarizing events. Repolarization refers specifically to the period of time during an action potential when the membrane potential is returning to its resting state after depolarization. Therefore, if a hyperpolarization event occurred before the depolarization event (bringing the membrane potential below -70 mV before reaching -50 mV), then repolarization could also be an appropriate answer.

Match the Terms to Changes Presented, Assuming a Resting Membrane