The resting membrane potential is close to the equilibrium potential of which of the following ions?

Question

Quizplus · Accepted Answer

The resting membrane potential is close to the equilibrium potential of potassium (K+) ions. This is because the cell membrane is more permeable to K+ ions than to other ions, so K+ ions tend to leak out of the cell, creating a negative charge inside the cell and a positive charge outside the cell. This difference in charge creates an electrical gradient that opposes the further movement of K+ ions out of the cell, and the equilibrium potential is reached when the electrical gradient is equal to the concentration gradient for K+ ions.

The Resting Membrane Potential Is Close to the Equilibrium Potential