A change in a membrane potential from -70 mV to -90mV is an example of
A) depolarization.
B) hyperpolarization.
C) polarization.
D) repolarization.
E) zero potential.

Question

Quizplus · Accepted Answer

A change in membrane potential from -70 mV to -90 mV is a decrease in the membrane potential, which means the cell is becoming more negative. This is called hyperpolarization. Depolarization is a movement of the membrane potential towards zero, polarization is a steady-state membrane potential, repolarization is a return to resting potential after depolarization, and zero potential is not a relevant term in this context.

A Change in a Membrane Potential from -70 MV to -90mV