Structural changes around a double bond in the ________ portion of the rhodopsin molecule trigger the chemical reactions that result in vision.

Question

Quizplus · Accepted Answer

Rhodopsin is a protein found in the rods of the retina that is responsible for vision in low-light conditions. It is formed by the combination of a protein called opsin and a light-sensitive molecule called retinal. The structure of retinal changes when it absorbs light energy, triggering a series of chemical reactions that result in the transmission of visual signals to the brain. The structural changes occur around a double bond in the retinal portion of the rhodopsin molecule. Therefore, choice C, retinal, is the correct answer.

Structural Changes Around a Double Bond in the ________ Portion