Biology MCQs by General knowledge Solutions

Biology  MCQs  by General knowledge Solutions

                                                                       

1. This is a photo-labile vitamin.

• (A) Thiamine
• (B) Riboflavin
• (C) Niacin
• (D) Cholecalciferol

2. Convulsive episodes occur when there is a severe deficiency of

• (A) Pyridoxine
• (B) Folic acid
• (C) Thiamine
• (D) Riboflavin

 3. Metastatic classification is seen in hypervitaminosis:

•  (A) A
•  (B) K
•  (C) D
•  (D) E

4. The anti vitamin for para aminobenzoic acid is

• (A) Aminopterin
• (B) Dicoumarol
• (C) Sulphonamides
• (D) Thiopanic acid

 5. Several pantothenic acid deficiency in man has been reported to cause

• (A) Burning feet syndrome
• (B) Scurvy
• (C) Cataract
•  (D) Xerophthalmia

6. Cholesterol is a precursor in the biogenesis of

•  (A) Vitamin A
• (B) Vitamin D
• (C) Vitamin E
• (D) None of these

7. This vitamin is a potent antioxidant of vitamin A:

• (A) Vitamin C
• (B) Vitamin E
• (C) Vitamin K
• (D) Vitamin D

8. In retinal rickets, the following hydroxylation of Vitamin D3 does not take place:

• (A) 25
• (B) 1
• (C) 24
• (D) 7

 9. The following does not have phosphorous:

• (A) Riboflavin
• (B) TPP
• (C) NAD+
• (D) COASH

10. Convulsions and delirium could be caused by a severe deficiency of

• (A) Thiamine
• (B) Glutamate
• (C) Niacin
• (D) Magnesium

 11. Rice polishings contain this vitamin:

• (A) Riboflavin
• (B) Niacin
• (C) Thiamine
• (D) Vitamin B12

12. In beri beri there will be accumulation of _______ in blood.

• (A) Aceto acetic acid
• (B) β-OH butyric acid
• (C) Pyruvic acid
• (D) Methyl malonic acid

13. Symptoms of pellagra are

• (A) Dermatitis and diarrhea only
• (B) Dermatitis and dementia only
• (C) Diarrhea, dermatitis and dementia
• (D) Diarrhea and elements only

14. Pyridoxine deficiency leads to

• (A) Megaloblastic anemia
• (B) Aplastic anemia
• (C) Hypochromic microcytic anemia
• (D) Permicious anemia

 15. The significant ocular lesion in arbo flovinosis:

• (A) Keratomalacia
• (B) Bitot’s spots
• (C) Vascularisation of the cornea
• (D) lachrymal metaplasia

16. Irradiation of foods raises the content of

• (A) Vitamin A
• (B) Vitamin D
• (C) Vitamin E
• (D) Vitamin K

17. An anti-vitamin for folic acid is

• (A) Amethoptesin
• (B) Dicoumarol
• (C) Pyrithoamine
• (D) Isoniazid

 18. Thymine is

• (A) Water soluble vitamin
• (B) Fat soluble vitamin
• (C) Purine base
• (D) Pyrimidine base

19. The anti-vitamin for para amino benzoic acid is

• (A) Aminopterrin
• (B) Dicoumarol
• (C) INH
• (D) Sulphonamides

20. The sulphur-containing vitamins among the following B-Vitamin is

• (A) Thiamine
• (B) Riboflavin
•  (C) Niacin
• (D) Pyridoxine

21. Taurinuria may be encountered in

• (A) Permicious anemia
• (B) Beriberi
• (C) Pellegra
• (D) Folate deficiency

 22. The three vitamins which are specially required for proper nerve functions are acid:

• (A) Thiamine, niacin and riboflavin
• (B) Thiamine, folic acid, choline
• (C) Thiamine, riboflavin, patothenic acid
• (D) Thiamine, pyridoxin, vitamin B12

23. This is a rich source for vitamin C.

• (A) Rice
• (B) Milk
• (C) Egg
• (D) Lemon

24. The following vitamin is involved in coenzyme function in transaminations:

• (A) Nicotinamide
• (B) Pyridoxine
• (C) Thiamine
• (D) Riboflavin

 25. Methyl malonic aciduria is seen in the deficiency of

• (A) Vitamin B6
• (B) Folic acid
• (C) Thiamine
• (D) Vitamin B12

 26. Deficiency of Vitamin C leads to

• (A) Rickets
• (B) Scurvy
• (C) Night blindness
• (D) All of these

 27. If no primer DNA was given, the following scientist could not have synthesized DNA.

• (A) Ochoa
• (B) Okazaki
• (C) Kornberg
• (D) Monod

28. Antisterility vitamin is

• (A) Vitamin B1
• (B) Vitamin B2
• (C) Vitamin E
• (D) Vitamin K

 29. All the following vitamins give rise to cofactors that are phosphorylated in the active form except

• (A) Vitamin A
• (B) Vitamin B1
• (C) Vitamin D
• (D) Vitamin E

 30. Molecular Iron, Fe, is

• (A) Stored in the body in combination with Ferritin
• (B) Stored primarily in the spleen
• (C) Excreted in the urine as Fe2+
• (D) absorbed in the intestine by albumin

31. Humans most easily tolerate a lack of which of the following nutrients?

• (A) Protein
• (B) Iodine
• (C) Carbohydrate
• (D) Lipid

32. A deficiency of vitamin B12 causes

• (A) Cheliosis
• (B) Beriberi
• (C) Pernicious anemia
• (D) Scurvy

33. In adults a severe deficiency of vitamin D causes

• (A) Night blindness
• (B) Osteomalacia
• (C) Rickets
• (D) Skin cancer

 34. Which of the following vitamins would most likely become deficient in a person who develops a completely carnivorous life style?

• (A) Thiamine
• (B) Niacin
• (C) Cobalamine
• (D) Vitamin C

35. Which of the following statements regarding Vitamin A is true?

• (A) It is not an essential Vitamin
• (B) It is related to tocopherol
• (C) It is a component of rhodopsin
• (D) It is also known as Opsin

36. Fully activated pyruvate carboxylase depends upon the presence of

• (A) Malate and Niacin
• (B) Acetyl CoA and biotin
• (C) Acetyl CoA and thiamine pyrophosphate
• (D) Oxaloacetate and biotin

37. Pantothenic acid is a constituent of coenzyme involved in

• (A) Acetylation
• (B) Decarboxylation
• (C) Dehydrogenation
• (D) Oxidation

38. Biotin is involved in which of the following types of reactions?

• (A) Hydroxylation
• (B) Carboxylation
• (C) Decarboxylation
• (D) Deamination

 39. Which of the following vitamins is the precurssor of CoA?

•  (A) Riboflavin
•  (B) Pantothenate
•  (C) Thiamine
•  (D) Cobamide

 40. Vitamins that function as dinucleotide derivatives include all the following except

• (A) Thiamine
• (B) Niacin
• (C) Nicotinate
• (D) Vitamin B2

 41. Methyl malonic aciduria is seen in a deficiency of

• (A) Vitamin B6
• (B) Folic acid
• (C) Thiamine
• (D) Vitamin B12

 42. What is the disease caused by thiamine deficiency?

• (A) Nyctalopia
• (B) Scurvy
• (C) Rickets
• (D) Beriberi

 43. Retinol and Retinol binding protein are bound with this protein:

• (A) Albumin
• (B) Prealbumin
• (C) α-globulin
• (D) β-globulin

 44. Megaloblastic anemia is caused by the deficiency of

• (A) Folic acid
• (B) Vitamin B6
• (C) Iron
• (D) Protein

45. This vitamin acts as anti oxidant.

• (A) Vitamin A
• (B) Vitamin D
• (C) Vitamin E
• (D) Vitamin K

46. Calcitriol is

• (A) 1-hydroxy cholecalciferol
• (B) 25-hydroxy cholecalciferol
• (C) 24, 25-dihydroxy cholecalciferol
• (D) 1, 25-dihydroxy cholecalciferol

47. 1-hydroxylation of 25-hydroxy Vitamin D3 takes place in

• (A) Liver
• (B) Kidneys
• (C) Intestine
• (D) Pancreas

48. 25-hydroxylation of Vitamin D3 takes place in

• (A) Liver
• (B) Kidneys
• (C) Intestines
•  (D) Pancreas

 49. Hydroxylation of 25-hydroxy cholecalciferol is promoted by

• (A) Cytochrome A
•  (B) Panthyroid hormone
• (C) Cytochrome b
• (D) cAMP

ANSWR:

1. C 2. B 3. A 4. C 5. C 6. A 7. B 8. B 9. A 10. D 11. D 12. C 13. C 14. C 15. B 16. C 17. A 18. D 19. D 20. A 21. A 22. D 23. D 24. B 25. D 26. C 27. C 28. C 29. B 30. A 31. C 32. C 33. B 34. D 35. C 36. B 37. A 38. B 39. B 40. A 41. D 42. D 43. B 44. A 45. D 46. D 47. B 48. A 49.B