Chemical Coordination and Regulation Question 53
53. Hormones, thyroxine, adrenaline and the pigment melanin are formed from
(a) tryptophan
(b) glycine
(c) tyrosine
(d) proline
Show Answer
Answer : c
Hints & Solutions
(c) Hormones thyroxine, adrenaline and the pigment melanin are formed from tyrosine. Tyrosine is transformed into dopa through the enzyme tyrosinase. Then through different metabolic pathways it produces thyroxine, adrenaline, melanin etc.
