Biology
NULL
Medium
Question
Cell membrane under resting conditions is impermeable to all the ions except _____________?
A
Na+
B
K+
✓ Official correct answer
C
Cl-
D
PO4-2
Community credibility
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A
Na+
No member explanations yet for this option.
B
K+
No member explanations yet for this option.
C
Cl-
No member explanations yet for this option.
D
PO4-2
No member explanations yet for this option.
Explanation
Under resting conditions, the cell membrane of a neuron is relatively impermeable to most ions but remains permeable to potassium ions (K+) through leak channels, which largely establishes the resting membrane potential.