A. Retinol
B. Retinal
C. Retinoic acid
D. All of the above
Related Mcqs:
- In humans and other primates as well as in guinea pigs, this vitamin cannot be synthesized because of the absence of the enzyme L-gulonolactone oxidase: the vitamin is_____________?
A. Pantothenic acid
B. Nicotinic acid
C. Ascorbic acid
D. Folic acid - Which vitamin is related to a co-factor in glycine metabolism is______________?
A. Vit E
B. Folic acid
C. Thiamine
D. Cobalamine - The function of vitamin K is______________?
A. Thrombin formation
B. Prothrombin formation
C. Fibrin formation
D. Thromboplastin formation - Deficiency of vitamin A causes the following except_____________?
A. Night blindness
B. Corneal dryness
C. Bitot’s spots
D. Myopia - In vitamin A deficiency, patient complains of all of the following except___________?
A. Night blindness
B. Xerophthalmia
C. Keratosis
D. Phophoric calciuria - Deficiency of vitamin C causes the following except____________?
A. Painful swollen gums
B. Abnormal Collagen
C. Anaemia
D. Diarrhoea - Vitamin B12 acts as a coenzyme to which one of the following enzyme ?
A. Isocitrate dehydrogenase
B. Homocyteine methyl transferase
C. Glycogen synthase
D. G-6-P dehydrogenase - The following vitamin is important in non-oxidative decarboxylation, transamination and transsulfuration reactions_____________?
A. Riboflavin
B. Thiamine
C. Pyridoxine
D. Pantothenic acid - Deficiency of vitamin C causes the following except_______________?
A. Defective collagen synthesis
B. Soft swollen gums
C. Pigeon chest
D. Subcutaneous & other hemorrhage - All of the following are true about manifestations of vitamin E deficiency except_____________?
A. Hemolytic anemia
B. Posterior column abnormalities
C. Cerebellar ataxia
D. Autonomic dysfunctions
