The signaling molecule involved in contact-dependent cell signaling is a:
A)small soluble peptide.
B)neurotransmitter.
C)transmembrane protein.
D)growth factor.

Question

Quizplus · Accepted Answer

Contact-dependent cell signaling involves direct physical contact between cells through transmembrane proteins, such as cadherins, integrins, and immunoglobulin superfamily cell adhesion molecules. These molecules transmit signals between cells by binding to each other and activating intracellular signaling pathways. Small soluble peptides, neurotransmitters, and growth factors are all involved in other forms of cell signaling, but not contact-dependent signaling.

The Signaling Molecule Involved in Contact-Dependent Cell Signaling Is A