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51. Vitamin A_____________?
A. Is water soluble
B. Deficiency causes impaired vision
C. Maintains normal plasma calcium levels
D. Is required for formation of clotting factors

52. 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

53. Deficiency of vitamin C causes the following except____________?
A. Painful swollen gums
B. Abnormal Collagen
C. Anaemia
D. Diarrhoea

54. Vit B12 is absorbed in the_____________?
A. Stomach
B. Terminal ileum
C. Lower jejunum
D. Proximal ileum

55. Coenzyme forms are correctly matched except_____________?
A. Biotin – carboxylated biotin
B. Vitamin B – ATP
C. Niacin – NAD+NADP
D. Vitamin B2 – FMN+FAC

56. Vitamin K dependent clotting factors are______________?
D. X
E. All of the above

57. The action of vitamin K in formation of clotting factor is through__________________?
A. Post transcription
B. Post translation
C. Golgi complex
D. Endoplasmic reticulum

58. Which of the following is not true of Vit D_______________?
A. Its active form is calcitriol
B. Increase calcium absorption from the intestines
C. Its deficiency results in rickets
D. Its decrease cause phosphate reabsorption from the kidneys

59. Most of vitamin B12 in the body is stored as_____________?
A. Methyl B12
B. Hydroxy B12
C. Cyano cobalamine
D. None of the above

60. The following vitamin is important in non-oxidative decarboxylation, transamination and transsulfuration reactions_____________?
A. Riboflavin
B. Thiamine
C. Pyridoxine
D. Pantothenic acid

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