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MCQs

Total Questions : 93 | Page 2 of 10 pages
Question 11. Lipoic acid exists in
  1.    oxidized form
  2.    reduced form
  3.    oxidized and reduced form both
  4.    none of these
 Discuss Question
Answer: Option C. -> oxidized and reduced form both
Question 12. An example of a digestive hormone is
  1.    amylase
  2.    gastrin
  3.    lipase
  4.    pepsin
 Discuss Question
Answer: Option B. -> gastrin
Question 13. Vitamin B12 is useful in the prevention and treatment of
  1.    pernicious anemia
  2.    cataract
  3.    scurvy
  4.    beri-beri
 Discuss Question
Answer: Option A. -> pernicious anemia
Question 14. In the co-enzyme B12the position occupied by a cyanide ion in vitamin B12 is bonded directly to the __________ of the ribose of adenosine.
  1.    5-6 dimethylbenzimidazole
  2.    hydroxycobalamin
  3.    cyanocobalamin
  4.    adenine
 Discuss Question
Answer: Option D. -> adenine
Question 15. The reductant, NADH, transfers the electrons via a flavo-proteins to the specific disulfide (S-S) protein to form a dithiol (SH,SH) protein which converts vitamin
  1.    B12(Co2+)to B12(Co+)
  2.    B12(Co+)to B12(Co2+)
  3.    B12(Co) to B12(Co2+)
  4.    B12(Co2+)to B12(Co)
 Discuss Question
Answer: Option A. -> B12(Co2+)to B12(Co+)
Question 16. An enzyme, L-folate reductase reduces folic acid to
  1.    dihydrofolic acid
  2.    hydrofolic acid
  3.    tetrahydrofolic acid
  4.    trihydrofolic acid
 Discuss Question
Answer: Option A. -> dihydrofolic acid
Question 17. Which of these is a symptom of vitamin A deficiency?
  1.    Impaired taste perception
  2.    Impaired blood clotting
  3.    Blindness
  4.    Osteoporosis
 Discuss Question
Answer: Option C. -> Blindness
Question 18. The disease Beriberi is due to a dietary deficiency in
  1.    vitamin B2 (riboflavin)
  2.    vitamin B1 (thiamine)
  3.    vitamin B6 (pyridoxine)
  4.    vitamin B12
 Discuss Question
Answer: Option B. -> vitamin B1 (thiamine)
Question 19. What compound of raw egg white causes a syndrome similar to vitamin B deficiency?
  1.    Ovalbumin
  2.    Albumin
  3.    Betabindin
  4.    Avidin
 Discuss Question
Answer: Option D. -> Avidin
Question 20. An early sign of retinol deficiencies in man is
  1.    xeropthalmia
  2.    keratinization
  3.    night blindness
  4.    none of these
 Discuss Question
Answer: Option C. -> night blindness

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