The difference between a weak stimulus and an intense stimulus is
A) the action potential is gradated and a weak stimulus causes a small change in polarity.
B) weak stimuli only open sodium gates, strong stimuli also open potassium gates.
C) the axon fires at a greater frequency for an intense stimulus.
D) a strong stimulus does not allow repolarization but sends a constant flow of ions.
E) an intense stimulus causes more sodium ions to diffuse into the cell.

Question

Quizplus · Accepted Answer

An action potential is an all-or-none phenomena. If the stimulus causes the axonal membrane to depolarize to the threshold, an action potential occurs. The strength of an action potential does not change, but an intense stimulus can cause an axon to start an axon potential more often in a given time interval than a weak stimulus.

The Difference Between a Weak Stimulus and an Intense Stimulus