Which Protein is Most Uniquely Associated with a Metabotropic Receptor

Question

Which protein is most uniquely associated with a metabotropic receptor?
A) Neurotransmitter
B) Second messenger
C) Ligand-gated receptor
D) Voltage-gated receptor

Accepted Answer

Second messengers are uniquely associated with metabotropic receptors, as these receptors activate intracellular signaling cascades through G-proteins, leading to the production of second messengers.