Biology

The correct answer is: D.Separate the ligand and receptor.

Explanation:

After a cellular response, signal transduction is typically terminated by separating the ligand from the receptor. When the ligand (the signaling molecule) dissociates from the receptor, it prevents further activation of the receptor, which effectively stops the signal.

Here’s why the other options are incorrect:

A.Blocking the pathway might prevent signaling, but it doesn't directly terminate the signal. The most commo...