Voltage - gated ion channels:

Question

Quizplus · Accepted Answer

Voltage-gated ion channels open in response to changes in the membrane potential and are responsible for the generation of the action potential in neurons. Therefore, both A and D are correct. Option B is incorrect because if the channel is always open, there would be no response to changes in the membrane potential. Option C is incorrect because ligand-gated ion channels open in response to neurotransmitters or other chemicals, not voltage-gated ion channels.

Voltage - Gated Ion Channels