To respond to a signal, a cell must have a(n) _______ molecule that can detect the signal.
A) paracrine
B) receptor
C) autocrine
D) responder
E) All of the above

Question

Quizplus · Accepted Answer

A receptor molecule is essential for responding to a signal. Paracrine and autocrine molecules can act as signals, but they are not directly involved in the cell's response. "Responder" is not a term used in the context of cellular signaling.

To Respond to a Signal, a Cell Must Have A(n)