Rhodopsin is made of the protein opsin and a _____ form of vitamin A.

Question

Quizplus · Accepted Answer

Rhodopsin is composed of the protein opsin and the chromophore retinal, which is a form of vitamin A. Specifically, it is the aldehyde form of vitamin A, also known as retinaldehyde or simply retinal. Therefore, choice B, retinal, is the correct answer. The other choices are not the specific form of vitamin A that is a component of rhodopsin. Retinol is an alcohol form of vitamin A that is found in dietary supplements and animal foods, retinoic acid is an acidic form of vitamin A that is involved in cellular signaling and gene expression, and carotenoids are a group of pigments that can be converted into vitamin A in the body but are not the specific form of vitamin A found in rhodopsin.

Rhodopsin Is Made of the Protein Opsin and a _____