The key reaction of eyesight (in dim light) involving vitamin A is:

Question

Quizplus · Accepted Answer

All of the choices describe aspects of the key reaction of eyesight in dim light involving vitamin A. Rhodopsin, a protein complex in the retina, undergoes a reaction triggered by light, leading to a cis-trans isomerization of a double bond in retinal (a form of vitamin A). This isomerization causes a change in the shape of rhodopsin, initiating a signal transduction pathway. The process also involves the bleaching of the pigment in the retina as part of the cycle of vision.

The Key Reaction of Eyesight (In Dim Light) Involving Vitamin