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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