Vitamin A is necessary for the synthesis of:
A)insulin
B)thyroxine
C)collagen in the dermis
D)rhodopsin in the retina

Question

Quizplus · Accepted Answer

Vitamin A is necessary for the synthesis of rhodopsin in the retina, which is involved in vision. Insulin is synthesized in the pancreas and does not require vitamin A. Thyroxine is a hormone produced by the thyroid gland and does not require vitamin A. Collagen in the dermis is synthesized with the help of vitamin C, not vitamin A.

Vitamin a Is Necessary for the Synthesis Of