Question

what will trigger the opening of chemically gated ion channels?
o changes in membrane potential
o conversion of atp to adp in the postsynaptic cell
o binding of neurotransmitter molecules

Explanation:

Chemically - gated ion channels open when neurotransmitter molecules bind to them, initiating a response in the postsynaptic cell. Changes in membrane potential open voltage - gated channels, and ATP to ADP conversion is not related to opening chemically - gated ion channels.

Answer:

C. Binding of neurotransmitter molecules