Question

The pigment retinal is a derivative of _________.

• A. vitamin A
• B. vitamin B
• C. vitamin D
• D. vitamin E

Answer 1

The correct option is A vitamin A

Retinal is an aldehydic pigment which is present in the photoreceptors in the eyes. Retinal combines with the protein opsin to form rhodopsin and photopsin and helps in low-light as well as colour vision. Retinal is derived from an alcoholic compound retinol, which is one of the types of vitamin A.