Multiple choice

The permeablility of the plasma membrane to K+ ions is _______ than its permeability to Na+ ions in a neuron, when it is at rest.

  1. greater

  2. lesser

  3. faster

  4. slower
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In a resting neuron, the plasma membrane is significantly more permeable to potassium ions (K+) than to sodium ions (Na+). This is due to many more leak channels being open for K+ at rest, which is fundamental to establishing the resting membrane potential.

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