When a neuron responds to a particular neurotransmitter by opening gated ion channels, the neurotransmitter is serving as which part of the signal pathway?
A) receptor
B) relay molecule
C) transducer
D) signal molecule
E) endocrine molecule

Question

Quizplus · Accepted Answer

The neurotransmitter acts as a signal molecule because it carries the signal from one neuron to another or from a neuron to a target cell, initiating a response by binding to receptors and causing ion channels to open.

When a Neuron Responds to a Particular Neurotransmitter by Opening