Which of the following chemicals is NOT a known neurotransmitter?
A) nitric oxide
B) ATP
C) carbon dioxide
D) acetylcholine
E) substance P

Question

Quizplus · Accepted Answer

Carbon dioxide is not classified as a neurotransmitter. Neurotransmitters are chemical substances like nitric oxide, ATP, acetylcholine, and substance P, which transmit nerve impulses across a synapse. Carbon dioxide is a byproduct of respiration and does not function as a neurotransmitter.

Which of the Following Chemicals Is NOT a Known Neurotransmitter