Chemical Coordination And Regulation Ques 70

70. 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.

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