Question
Biology Question on chemical coordination and integration
Hormones thyroxine, adrenaline and the pigment melanin are formed from
A
tyrosine
B
proline
C
tryptophan
D
glycine.
Answer
tyrosine
Explanation
Solution
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.