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In the chemistry of vision in mammals, t...

In the chemistry of vision in mammals, the photosensitive substance is called

A

rhodopsin

B

melanin

C

sclerotin

D

retinol

Text Solution

Verified by Experts

The correct Answer is:
A
Rhodopsin is a pigment present in the rod cells of the retina.It consists of two components-opsin and retinal (=retinene).Retinal is an aldehyde of vitamin A which absorbs light falling on the rod and changes its form and separates from the opsin component This initiates the transmission of a nerve impulse to the brain.Rhodopsin is a photosensitive substance and allows vision in dim light (night vision).
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