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Question
Complete the following paragraph with the choices given.Vitamin A functions in the visual cycle. This mechanism involves a vitamin A molecule called A , combining with B to form C . When photon energy strikes this molecule, it splits and causes a conformational change in the molecule, causing an electrical signal to be sent to the brain.
Blank A
a. rhodopsin
b. 11-cis retinal
c. all-trans retinal
d. retinol
e. opsin
f. retinoic acid
Blank B
a. rhodopsin
b. 11-cis retinal
c. all-trans retinal
d. retinol
e. opsin
f. retinoic acid
Blank C
a. rhodopsin
b. 11-cis retinal
c. all-trans retinal
d. retinol
e. opsin
f. retinoic acid
Answer
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