Which one of the following combination is wrong?: (A) Phenylalanine - Niacin, (B) Trytophon - Serotonin, (C) Phenylalanine - Melanin, (D) Tyrosine - Epinephrine
Answer is A. Niacin is formed by metabolism of tryptophan. Other options are correct amino acids and their metabolic productsRef: Textbook of biochemistry for medical students, seventh edition, page no: 239