The Receptors for a Group of Signalling Molecules Known as Growth

Question

The receptors for a group of signalling molecules known as growth factors are often
A)ligand-gated ion channels.
B)G protein-coupled receptors.
C)cyclic AMP.
D)receptor tyrosine kinases.
E)neurotransmitters.

Accepted Answer

Growth factors typically bind to receptor tyrosine kinases, which activate intracellular signaling pathways by phosphorylating tyrosine residues on target proteins.