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NEET Biology Neural Control and Coordination Question Bank Self Evaluation Test - Neural Control and Co-ordination

  • question_answer
    The resting membrane potential for neuron A is -70m V, while the resting potential for neuron B is -50m V. The threshold voltage for the production of an action potential is -35mV for both neurons. Which of the following statements is incorrect?    

    A) Neuron A must depolarise by 35mV to reach the threshold voltage.

    B) Neuron B must hyperpolarise by 15mV to reach the threshold voltage.

    C) The inside of bothneurons is negatively charged with respect to the outside.

    D) A single EPSP received by neuron A would cause it to depolarise slightly.

    Correct Answer: B

    Solution :

    [b] Hyperpolarising neuron B by 15 mV would make its membrane potential -65mV, actually taking it farther away from the threshold voltage needed to fire an action potential.


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