Ligand-Gated Ion Channels Practice Test

G protein-coupled receptor is an example of                      ion channel and the insulin receptor is an example of                      ion channel.

A researcher is analyzing the distribution of ion channels in the nervous system. He finds that a type of ion channel is a lot more abundant in the neurons than in the glial cells. What can you conclude about this ion channel?

I. It is a lot faster than G protein-coupled receptor (GPCR)

II. It responds to changes in voltage

III. It is involved in depolarization