Neural Control and Coordination Question 48
48. Photosensitive compound in human eye is made up of
(a) Guanosine and Retinol
(b) Opsin and Retinal
(c) Opsin and Retinol
(d) Transducin and Retinene
Show Answer
Answer : b
Hints & Solutions
(b) Retinal is also known as retinaldehyde. It was originally called retinene, and renamed afterwards it was discovered to be vitamin A aldehyde. Retinal is one of the many forms of vitamin A (the number of which varies from species to species). Retinal is a polyene chromophore, bound to proteins called opsins, and is the chemical basis of animal vision.
