Question
Question: The amino acid tryptophan is the precursor for the synthesis...
The amino acid tryptophan is the precursor for the synthesis
A
Thyroxine and Triiodothyronine
B
Estrogen and Progesterone
C
Cortisol and Cortisone
D
Melatonin and Serotonin
Answer
Melatonin and Serotonin