Question

question 8
4 points
which type of proteins can function as chemical messengers or as receptors in the plasma membrane?
transport
enzyme
defensive
communication
clear selection

Explanation:

Transport proteins are for moving substances across membranes. Enzyme proteins act as catalysts. Defensive proteins (like antibodies) protect against pathogens. Communication proteins (such as signaling molecules or membrane receptors) function in cell - cell communication, acting as chemical messengers or plasma membrane receptors.

Answer:

D. communication