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Which of these is not a protein?(a) Iodopsin(b) Rhodopsin(c) Opsin(d) RetinalThe question was posed to me in an online quiz.This interesting question is from Neural Control and Coordination topic in division Neural Control and Coordination of Biology – Class 11

Answer»

Correct OPTION is (d) Retinal

The explanation: Iodopsin and rhodopsin are PHOTOSENSITIVE pigments which are PROTEINACEOUS in nature. Opsin is also a PROTEIN. However, retinal is not a protein. It is an aldehyde of vitamin A.



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