Cells that are deficient in vitamin A become hard and dry because they produce _______, a protein.
A) retinal
B) opsin
C) keratin
D) xerophthin

Name: Cells that are deficient in vitamin A become hard and dry because they produce _______, a protein. A) retinal B) opsin C) keratin D) xerophthin
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Question

Quizplus · Accepted Answer

Cells deficient in vitamin A produce excess keratin, causing the cells to become hard and dry. Retinal and opsin are involved in the visual process, and xerophthin is not a known protein.

Cells That Are Deficient in Vitamin a Become Hard and Dry