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NEET Sample Paper NEET Sample Test Paper-52

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

    A) More potassium ions enter the axon than sodium ions leaving it

    B) More sodium ions enter the axon

    C) All potassium ions leave the axon

    D) All sodium ions exit the axon

    Correct Answer: B

    Solution :

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


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