All of the following are examples of functions of a metabotropic receptor except:
A) gene expression and protein synthesis may occur after a neurotransmitter binds to the receptor.
B) a G-protein acts on ions channels or effector enzymes after a neurotransmitter bind to the receptor.
C) a G-protein may act on an effector enzyme that may then activate a second messenger.
D) an ion channel attached to the receptor will open when a neurotransmitter binds to the receptor.

Question

Quizplus · Accepted Answer

Metabotropic receptors do not have an ion channel attached to them, so an ion channel will not open when a neurotransmitter binds to the receptor. The other options are all functions of metabotropic receptors. A G-protein is involved in all of these functions, acting on either ion channels or effector enzymes, leading to downstream effects such as gene expression, protein synthesis, and the activation of second messengers.

All of the Following Are Examples of Functions of a Metabotropic