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.

Action Potential

An action potential is a rapid electrical impulse that travels along the membrane of a neuron or muscle cell, facilitating communication and response.

Plasma Membrane

A two-layer lipid membrane that surrounds the cytoplasm within a cell, governing how substances move in and out.

Depolarization

The process during which a cell's membrane potential becomes less negative, making it more likely to fire an action potential.