Why are the symptoms of zinc and vitamin A deficiency similar?
A)Because zinc deficiency prevents the expression of genes controlled by retinoic acid.
B)A deficiency of vitamin A prevents zinc from binds to a protein receptor in the nucleus of the cell.
C)Zinc deficiency prevents the absorption of vitamin A.
D)Both zinc and retinal are required in the visual cycle.

Question

Quizplus · Accepted Answer

Zinc is essential for the expression of genes controlled by retinoic acid, which is needed for the synthesis of vitamin A. Without sufficient zinc, the synthesis and function of vitamin A is impaired, leading to similar symptoms of deficiency.

Why Are the Symptoms of Zinc and Vitamin a Deficiency