Biology

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

Explanation:

After a cellular response is triggered, the signaling pathway must be terminated to prevent continuous, unregulated activation. This can be achieved in several ways:

D.Separate the ligand and receptor: Correct. One of the key ways to terminate the signaling is by removing the ligand (the signaling molecule) from the receptor or by inducing the receptor to internalize or become inactivated. This stops further signaling and resets the system.

A.Block the transduction pathway: This could be a mechanism for terminating the response, but it’s not typically how signaling is initially terminat...