Question

Amino acid that serves as a precursor for formation of the pigment responsible for human skin color is-

• A. Tryptophan
• B. Cholesterol
• C. Tyrosine
• D. Indoleamine

Hint:

Understand the role of tyrosine in the biosynthesis of melanin and its protective function against UV damage.

Answer 1

The Correct Option is C

The amino acid Tyrosine is the primary precursor for melanin production, the pigment responsible for the color of skin, hair, and eyes. Through the enzymatic action of tyrosinase, tyrosine is converted into DOPA and then into melanin. This pathway plays a protective role by shielding skin cells from UV-induced DNA damage. Other compounds listed, such as tryptophan and cholesterol, are involved in unrelated biochemical pathways.