Like Dopamine, Molecule That Makes One Feel Happy
Puzzle 7 of Tricky Spelling Pack
Question is: Like Dopamine, Molecule That Makes One Feel Happy
and the answer is: SEROTONIN
Word Meaning:
SEROTONIN — (biochemistry) An indoleamine neurotransmitter, 5-hydroxytryptamine, that is involved in depression, appetite, etc., and is crucial in maintaining a sense of well-being, security, etc.
Definitions from Wiktionary.