Which of the following happens at resting membrane potential? A)The membrane is more permeable to K⁺ than to Na⁺. B)The membrane is more permeable to Na⁺ than to K⁺. C) Cl^- is not at its equilibrium potential. D) The membrane is more permeable to Cl^-.

Question

Quizplus · Accepted Answer

At resting membrane potential, the membrane is more permeable to K+ ions compared to Na+ ions. This is because the resting membrane potential is maintained by the K+ leak channels that allow K+ ions to pass out of the cell, making the inside of the cell more negative. This creates an electrical gradient that opposes the movement of positively charged ions, such as Na+. Therefore, the membrane is less permeable to Na+ ions at resting membrane potential compared to K+ ions. Additionally, Cl- ions tend to be at their equilibrium potential at resting membrane potential, meaning their movement is not driving any net changes in membrane potential.

Which of the Following Happens at Resting Membrane Potential