In a Signal Transduction Pathway Involving G Protein-Coupled Receptors, the Receptor

Multiple Choice

In a signal transduction pathway involving G protein-coupled receptors, the receptor first binds the ligand and activates a G protein.After the GTP-bound subunit of the G protein separates from the rest of the G protein, it travels until it encounters

A) an activator.
B) a receptor.
C) an effector protein.
D) a protein kinase.
E) another G protein.