The specific term for a signal that is made by a cell and that diffuses to and affects a nearby cell is a(n)
A) peptide signal.
B) hormone.
C) autocrine signal.
D) paracrine signal.
E) juxtacrine signal.

Question

Quizplus · Accepted Answer

A paracrine signal is a type of cell signaling in which a signal molecule diffuses locally to target cells in the immediate vicinity of the signaling cell. This is different from autocrine signaling, which involves the signaling cell responding to its own signal, or juxtacrine signaling, which involves direct contact between neighboring cells. Peptide signals and hormones are both types of signaling molecules, but they may act through different mechanisms and at different distances.

The Specific Term for a Signal That Is Made by a Cell