If no voltage-gated potassium channels were present in the axonal membrane, how

Question

If no voltage-gated potassium channels were present in the axonal membrane, how would the action potential look different? A. It would take longer to reach the peak of the action potential, that is the rising phase of the action potential would be less steep B. The membrane potential would take longer to return to rest after the peak of the action potential. C. The undershoot would be less pronounced, that is, it would go to a less negative voltage and it would not last as long D. All of the above are correct E. B and C are both correct

Explanation / Answer

If no voltage gated potassium channel is present in axonal membrane then

B) The membrane potential would take longer to return to the rest after the peak of the action potential.

C) The undershoot would be less pronounced, it would go to a less negative voltage and it not last as long

Option E is correct

Option A is incorrect because this phase depends on sodium influx or on sodium channel

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