Photopigments are molecules found in rods and cones that consist of
A) two peptides and a sugar molecule.
B) a carbon ring.
C) a steroid ring.
D) two fatty acid chains.
E) an opsin and a retinal.

Question

Quizplus · Accepted Answer

Photopigments are composed of an opsin protein and a chromophore called retinal. When light is absorbed by retinal, it changes shape, inducing a cascade of events that results in the generation of an electrical signal that can be transmitted to the brain.

Photopigments Are Molecules Found in Rods and Cones That Consist