The following is false about tryptophan_____________?
Correct answer: D. Non-essential amino acid
- A. Involved in melatonin in synthesis
- B. Involved in serotonin synthesis
- C. Involved in niacin synthesis
- D. Non-essential amino acid
Explanation
Tryptophan is an essential amino acid, so it must be obtained from the diet. It is also a precursor of serotonin, melatonin and niacin, making the other statements true.
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