medium · MCAT chem-phys
A biochemical study investigates the phototransduction cascade within human rod cells. When a photon of light strikes the outer segment of the rod, it interacts with the chromophore retinal.
Which of the following describes the specific molecular transition triggered by this event?
- The conversion of beta-carotene into two molecules of 11-cis retinal.
- The isomerization of 11-cis retinal to all-trans retinal.
- The reduction of all-trans retinal to 11-cis retinol.
- The dissociation of the phosphate group from 11-cis retinal.
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