(A) Cholecalciferol
(B) Ergosterol
(C) 7-Dehydrocholesterol
(D) Ergocaliferol
Author:
Transducin is a?
(A) Signal transducer
(B) Stimulatory G-protein
(C) Trimer
(D) All of these
Retinoic acid is involved in the synthesis of?
(A) Rhodopsin
(B) Iodopsin
(C) Porphyrinopsin
(D) Glycoproteins
Prosthetic group in cone cell phototreceptors is?
(A) Iodine
(B) Opsin
(C) 11-cis-retinal
(D) all-trans-retinal
Retinoic acid can?
(A) Act as a photo receptor
(B) Support growth and differentiation
(C) Act as an anti-oxidant
(D) None of these
Provitamins A include?
(A) Retinal
(B) Retionic acid
(C) Carotenes
(D) All of these
Rod cells possess a trans-membrane protein which is?
(A) Adenylate cyclase
(B) Transducin
(C) Rhodopsin
(D) B as well as C
Nyctalopia is?
(A) Drying of eyes
(B) Destruction of cornea
(C) Blindness
(D) Inability to see in dimlight