Biology

The correct answer is: B.Only target cells have specific receptor proteins for the signal.

Explanation:

In signal transduction, only target cells are equipped with the specific receptor proteins that are required to bind to a particular ligand (the signaling molecule). These receptors are typically present on the surface of the cell or inside the cell, and they are tailored to recognize and respond to specific signals.

Here's why the other options are incorrect:

A.Some cells are not capable of receiving signals: While it’s true that some cells may not respond if they don’t have the right receptors, this i...