Tryptophan Is a Precursor for the Neurotransmitter(s)
A) Serotonin $\gamma$ -Aminobutyric Acid

question 10

Multiple Choice

Tryptophan is a precursor for the neurotransmitter(s)

• A) serotonin.
• B) norepinephrine.
• C) adenine.
• D) \(\gamma\)-aminobutyric acid.
• E) None of the answers is correct.

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