What reaction has to occur each time light reaches the eye before the product of this reaction can be recombined with opsin to reform rhodopsin?

Question

Quizplus · Accepted Answer

The retinal molecule within rhodopsin must change from cis-retinal to trans-retinal in response to light in order for the rhodopsin to become activated. This change is what triggers the downstream signaling cascade that ultimately leads to vision. After this occurs, trans-retinal must be converted back to cis-retinal before it can recombine with opsin to reform rhodopsin.

What Reaction Has to Occur Each Time Light Reaches the Eye