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At resting membrane potential, the axonal membrane is impermeable to which ions?(a) Calcium ions(b) Sodium ions(c) Potassium ions(d) Chlorine ionsI 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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