NEET Biology question

An action potential in the nerve fibre is produced when the positive and negative charges on the outside and the inside of the axon membrane are reversed because

(A)More potassium ions enter the axon as compared to sodium ions leaving it
(B)More sodium ions enter the axon as compared to potassium ions leaving itCorrect
(C)All potassium ions leave the axon
(D)All sodium ions enter the axon

Answer: (B)

Solution

During depolarisation, voltage-gated Na+ channels open and Na+ ions rush into the axon in much greater numbers than

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Question ID VK-117560