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At resting membrane potential, the axonal membrane is impermeable to which ions?

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in Biology – Class 11 by (272k points)
At resting membrane potential, the axonal membrane is impermeable to which ions?

(a) Calcium ions

(b) Sodium ions

(c) Potassium ions

(d) Chlorine ions

I had been asked this question in an interview for job.

The origin of the question is Neuron-2 in division Neural Control and Coordination of Biology – Class 11

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Correct answer is (b) Sodium ions

For explanation: The axonal membrane of the neuron or nerve cell is semi-permeable in nature. At resting membrane potential, the membrane is permeable to potassium ions but nearly impermeable to sodium ions.

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