Question

The signaling molecule involved in contact-dependent cell signaling is:

Please choose the correct answer from the following choices, and then select the submit answer button.


-a transmembrane protein.

-2.3

-a growth factor.

-a small soluble peptide.

-a neurotransmitter.

Answer 1

The signaling molecule in contact-dependent cell signaling is a transmembrane protein that requires direct physical contact between cells for communication.

Step-by-step explanation:

The signaling molecule involved in contact-dependent cell signaling is a transmembrane protein.

Contact-dependent signaling requires cells to be in close proximity to one another. In this type of signaling, membrane-bound proteins on the surface of one cell interact directly with receptor proteins on the surface of another cell. These interactions are crucial for a range of biological processes, including immune responses, development, and the formation of neural networks.

Unlike signaling that involves secreted molecules like growth factors, neurotransmitters, or small soluble peptides, contact-dependent signaling does not depend on substances being released into the extracellular space and instead relies on direct physical contact between cells.