Question

RMP predominantly affected by which ion?

• A. K+
• B. Ca
• C. Na
• D. Cl

Hint:

Potassium ions (K+) are crucial in establishing the resting membrane potential because their movement across the membrane contributes to the negative charge inside the cell.

Answer 1

The Correct Option is A

The resting membrane potential (RMP) is primarily influenced by the concentration gradient of potassium ions (K+). Potassium ions are more concentrated inside the cell, and their movement out of the cell through potassium channels creates a negative charge inside, setting the RMP.