MCQs on Vitamin for ICAR (SRF or JRF) /ASRB /CSIR NET/BET Exams #1

1. Milk is deficient in which vitamin?
   (A) Vitamin C
   (B) Vitamin A
   (C) Vitamin B2
   (D) Vitamin K

2. The average pH of urine is:
   (A) 7.0
   (B) 6.0
   (C) 8.0
   (D) 0.0

3. Vitamins are:
   (A) Accessory food factors
   (B) Generally synthesized in the body
   (C) Produced in endocrine glands
   (D) Proteins in nature

4. Vitamin A (retinal) is a:
   (A) Steroid
   (B) Polyisoprenoid compound containing a cyclohexenyl ring
   (C) Benzoquinone derivative
   (D) 6-Hydroxychromane

5. Preformed Vitamin A is supplied by:
   (A) Milk, fat, and liver
   (B) All yellow vegetables
   (C) All yellow fruits
   (D) Leafy green vegetables

6. Retinol and retinal are interconverted requiring dehydrogenase or reductase in the presence of:
   (A) NAD or NADP
   (B) NADH + H⁺
   (C) NADPH
   (D) FAD

7. Fat-soluble vitamins are:
   (A) Soluble in alcohol
   (B) Composed of one or more propene units
   (C) Stored in the liver
   (D) All of the above

8. One manifestation of Vitamin A deficiency is:
   (A) Painful joints
   (B) Night blindness
   (C) Loss of hair
   (D) Thickening of long bones

9. Deficiency of Vitamin A causes:
   (A) Xerophthalmia
   (B) Hypoprothrombinemia
   (C) Megaloblastic anemia
   (D) Pernicious anemia

10. Retinal is a component of:
    (A) Iodopsin
    (B) Rhodopsin
    (C) Cardiolipin
    (D) Glycoproteins

11. The most potent Vitamin D metabolite is:
    (A) 25-Hydroxycholecalciferol
    (B) 1,25-Dihydroxycholecalciferol
    (C) 24,25-Dihydroxycholecalciferol
    (D) 7-Dehydrocholesterol

12. Vitamin E reduces the requirement of:
    (A) Iron
    (B) Zinc
    (C) Selenium
    (D) Magnesium

13. The most important natural antioxidant is:
    (A) Vitamin D
    (B) Vitamin E
    (C) Vitamin B12
    (D) Vitamin K

14. The vitamin required for the formation of hydroxyproline (in collagen) is:
    (A) Vitamin C
    (B) Vitamin A
    (C) Vitamin D
    (D) Vitamin E

15. Concentration of pyruvic acid and lactic acid in blood increases due to deficiency of:
    (A) Thiamin
    (B) Riboflavin
    (C) Niacin
    (D) Pantothenic acid

16. Vitamin B1 coenzyme (TPP) is involved in:
    (A) Oxidative decarboxylation
    (B) Hydroxylation
    (C) Transamination
    (D) Carboxylation

17. Increased glucose consumption increases the dietary requirement for:
    (A) Pyridoxine
    (B) Niacin

18. Niacin is synthesized in the body from:
    (A) Tryptophan
    (B) Tyrosine
    (C) Glutamate
    (D) Aspartate

19. The vitamin which does not contain a ring in its structure is:
    (A) Pantothenic acid
    (B) Vitamin D
    (C) Riboflavin
    (D) Thiamin

20. The precursor of CoA is:
    (A) Riboflavin
    (B) Pyridoxamine
    (C) Thiamin
    (D) Pantothenate