Question

Which of the following vitamins is present in the protein found in rods?

• A. Vit A
• B. Vit B
• C. Vit C
• D. Vit D

Answer 1

Answer: (A)

There are two types of photoreceptor cells, namely, rods and cones. These cells contain the light-sensitive proteins called the photopigments. The daylight (photopic) vision and colour vision are functions of cones and the twilight (scotopic) vision is the function of the rods. The rods contain a purplish-red protein called the rhodopsin or visual purple, which contains a derivative of Vitamin A.