A neurotransmitter receptor is a ligand-gated ion channel,and neurotransmitter binding to this receptor results in a rapid but short-lived change in the postsynaptic membrane potential.This type of receptor is most likely
A) synaptic.
B) excitatory.
C) inhibitory.
D) ionotropic.
E) metabotropic.

Question

Quizplus · Accepted Answer

A ligand-gated ion channel is also known as an ionotropic receptor, which means that it directly allows ions to pass through the membrane when activated by a ligand, such as a neurotransmitter. This type of receptor results in a rapid change in the postsynaptic membrane potential because ions are allowed to flow across the membrane almost immediately upon activation. Therefore, the best choice would be D) ionotropic.

A Neurotransmitter Receptor Is a Ligand-Gated Ion Channel,and Neurotransmitter Binding