Neural Control And Coordination Question 14

Question: One group of neurotransmitter receptors is the metabotropic receptors. Which one of the following statements about metabotropic receptors is false?

Options:

A) Both muscanaric and p-adrenergic receptors are metabotropic receptors.

B) Metabotropic receptors are coupled with A proteins.

C) Metabotropic receptors can stimulate gene expression.

D) Muscanaric receptors bind with acetylcholine.

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Metabotropic receptors are coupled with proteins that bind GDP.

When the receptor bind a neurotransmitter, the GDP is turned into GTP and a subunit of the G protein separates and activates effector proteins.