Question

Which of the following statements is false about a ligand-gated ion channel receptor?

(a) They are present in the cell membrane

(b) They consist of five glycoproteins

(c) Differences in membrane potential affect whether the channel receptors are open or close

(d) Neurotransmitters can act as the chemical messengers for these channels

I had been asked this question in an online interview.

This key question is from Gated Ion Channels in chapter Biosignalling of Biochemistry

Answer 1

Right choice is (c) Differences in membrane potential affect whether the channel receptors are open or close

To explain: Ligands affect whether the channel receptors are open or close in a ligand-gated ion channel whereas voltage gated ion channels are controlled by the differences in membrane potential affect.