The resting membrane potential is closest to the equilibrium potential for
A)sodium ions.
B)chloride ions.
C)calcium ions.
D)potassium ions.

Question

Quizplus · Accepted Answer

The resting membrane potential is closest to the equilibrium potential for potassium ions because the membrane is more permeable to potassium ions than any other ion at rest. This means that potassium ions diffuse out of the cell, making the inside more negative, until the electrical potential across the membrane exactly opposes the concentration gradient for potassium.

The Resting Membrane Potential Is Closest to the Equilibrium Potential