Suppose a particular neurotransmitter causes an IPSP in postsynaptic cell X and an EPSP in postsynaptic cell Y. A likely explanation is that
A) the threshold value in the postsynaptic membrane is different for cell X and cell Y.
B) the axon of cell X is myelinated, but that of cell Y is not.
C) only cell Y produces an enzyme that terminates the activity of the neurotransmitter.
D) cells X and Y express different receptor molecules for this particular neurotransmitter.

Question

Quizplus · Accepted Answer

Since the same neurotransmitter causes opposite effects in different cells, it is likely that the cells have different receptor molecules for that neurotransmitter.

Suppose a Particular Neurotransmitter Causes an IPSP in Postsynaptic Cell