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 -90 mV from resting potential
A)electrical polarization
B)hyperpolarization
C)depolarization
D)repolarization
E)more than one of the answers

Question

Quizplus · Accepted Answer

Hyperpolarization refers to a change in the membrane potential that makes the inside of the cell even more negative than the resting potential. A change to -90 mV is further away from -70 mV, indicating a more negative state.

Answer: C
 Depolarization refers to a change in the membrane potential that makes the inside of the cell less negative than the resting potential. A change to -90 mV is still negative, but now closer to zero and therefore less negative than -70 mV.

Answer: E
 Repolarization refers to the return of the membrane potential to the resting potential after a depolarization event. A change to -90 mV from -70 mV would require repolarization back to -70 mV, but this option is not available. Therefore, it is possible that both hyperpolarization (getting more negative) and depolarization (getting less negative) could have occurred, depending on the context of the change.

Match the Terms to Changes Presented, Assuming a Resting Membrane