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.

Question

Quizplus · Accepted Answer

Receptor tyrosine kinases are the most common type of receptors for growth factors. These receptors work as enzymes that can transfer a phosphate group to specific tyrosine residues on the receptor itself or on intracellular signaling proteins, activating downstream signal transduction pathways.

The Receptors for a Group of Signalling Molecules Known as Growth