Which of the Following Events Is NOT a Characteristic of an Action

question 38

Multiple Choice

Which of the following events is NOT a characteristic of an action potential?

• A) The plasma membrane becomes highly permeable to Na⁺ and depolarization results.
• B) As Na⁺ enter, the inside of the plasma membrane becomes more negative.
• C) At the peak of depolarization, Na⁺ channels begin to close and K⁺ channels open.
• D) In repolarization, K⁺ flow out of the cell.
• E) Action potentials occur according to the all-or-none principle.

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