The membrane is more permeable to sodium than potassium at rest.

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Quizplus · Accepted Answer

The membrane is actually more permeable to potassium than sodium at rest. This is due to the presence of a high number of potassium leak channels, which allow potassium ions to move freely out of the cell and down their concentration gradient. Sodium, on the other hand, is kept mostly outside the cell due to the action of the sodium-potassium pump, which actively pumps sodium out of the cell and potassium into the cell to maintain the resting membrane potential.

The Membrane Is More Permeable to Sodium Than Potassium at Rest