A) Melatonin and Serotonin
B) Thyroxine and Triiodothyronine
C) Estrogen and Progesterone
D) Cortisol and Cortisone
Correct Answer: A
Solution :
Amino acid tryptophan is the precursor for the synthesis of melatonin and serotonin.You need to login to perform this action.
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