At the resting membrane potential, the membrane is most permeable to________ , which moves_______the cell due to its electrochemical gradient.
A) chloride : into
B) potassium : into
C) sodium : out of
D) sodium : into
E) potassium : out of

Question

Quizplus · Accepted Answer

At the resting membrane potential, the membrane is most permeable to potassium ions (K+), and due to its electrochemical gradient, potassium moves out of the cell. This movement is facilitated by potassium channels that are more numerous and open more frequently than channels for other ions at rest, leading to a net outward flow of K+.

At the Resting Membrane Potential, the Membrane Is Most Permeable