Question

Match the class of cell-surface receptor with the best description of its function.

enzyme-coupled receptors ______
A. alter the membrane potential directly by changing the permeability of the plasma membrane
B. signal by opening and closing in a ligand-independent manner
C. must be coupled with intracellular monomeric GTP-binding proteins
D. all receptors of this class are polypeptides with seven transmembrane domains
E. discovered for their role in responding to growth factors in animal cells

Answer 1

Enzyme-coupled receptors, also known as enzyme-linked receptors, are cell-surface receptors that activate enzymes upon ligand binding.

Step-by-step explanation:

Enzyme-coupled receptors, also known as enzyme-linked receptors, are cell-surface receptors with intracellular domains that are associated with an enzyme. When a ligand binds to the extracellular domain of an enzyme-coupled receptor, a signal is transferred through the membrane, activating the enzyme. Activation of the enzyme sets off a chain of events within the cell that eventually leads to a response. Enzyme-coupled receptors are discovered for their role in responding to growth factors in animal cells.