(A) Signal transducer
(B) Stimulatory G-protein
(C) Trimer
(D) All of these
Author:
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
An early effect of vitamin a deficiency is?
(A) Xerophthalmia
(B) Keratomalacia
(C) Prolonged dark adaptation time
(D) Follicular hyperkeratosis