Which of the following best describes the behavior of a gated channel? (a) it stays open continuously when stimulated

(b) it opens more frequently in response to a given stimulus

(c) it opens more widely as the stimulus becomes stronger

(D) it remains closed if unstimulated

Option B, It opens more frequently in response to a given stimulus.

Explanation:

A gated channel is one which opens specifically to some kind of stimulus. These stimulus could be a neurotransmission, a variation or change in the pressure, voltage, lights, chemical environment or any other physical parameter.

For example

Ligand gated ion channel which have receptors forming a membrane ion channel to allow passage of specific chemicals such as Na+, K+, Ca++, or Cl - only after the activation of receptor/channel complex.

Hence, option B is correct