The same molecule may be both __________ and __________.
A)enzyme; neurotransmitter
B)neurotransmitter; hormone
C)enzyme; pheromone
D)hormone; second messenger
E)hormone; local signaling molecule

Question

Quizplus · Accepted Answer

A molecule can act as both a neurotransmitter and a hormone depending on where it is released and how it interacts with receptors. For example, dopamine is a neurotransmitter in the brain, but it can also act as a hormone when released by the adrenal gland. Similarly, norepinephrine can act as a neurotransmitter in the brain or as a hormone when released by the adrenal gland into the bloodstream.

The Same Molecule May Be Both __________ and __________

The Same Molecule May Be Both and