VPY-0022
QUESTION
Rhodopsin is made up of?
OPTIONS
(A) 11 cis retinal
(B) 11 cis retinol
(C) All trans retinal
(D) All trans retinol
ANSWER
(A) 11 cis retinal
EXPLANATION
11-cis-retinal is the correct option because rhodopsin consists of the protein opsin bound to the chromophore 11-cis-retinal. 11-cis-retinol is an alcohol rather than the aldehyde chromophore, while all-trans-retinal and all-trans-retinol are not the light-sensitive chromophore configuration present in resting rhodopsin.
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