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MCQs

Total Questions : 93 | Page 5 of 10 pages
Question 41. The occurrence of metals such as iron or molybdenum in some flavoproteins can
  1.    stabilize the semiquinone
  2.    de-stabilize the semiquinone
  3.    all of these
  4.    form chelation
 Discuss Question
Answer: Option A. -> stabilize the semiquinone
Question 42. Who discovered vitamin C (ascorbic acid)?
  1.    Kerry Mull is
  2.    Paul Berg
  3.    Linus Pauling
  4.    Albert Szent-Gyorgyi
 Discuss Question
Answer: Option D. -> Albert Szent-Gyorgyi
Question 43. Selenium is an essential component of the enzyme glutathione peroxidase which
  1.    None of these
  2.    reduces toxic hydoperoxycompounds in tissues
  3.    scavenges toxic hydoperoxycompounds in tissues
  4.    oxidizes toxic hydoperoxycompounds in tissues
 Discuss Question
Answer: Option C. -> scavenges toxic hydoperoxycompounds in tissues
Question 44. A deficiency of niacin causes
  1.    scurvy
  2.    cataract
  3.    pellagra
  4.    anemia
 Discuss Question
Answer: Option C. -> pellagra
Question 45. Models of end-linked Osaka VI Fibrinogen dimers, a bilayer dimer is linked at
  1.    either end via two disulfide bonds
  2.    both ends by two disulfide bonds
  3.    both ends by one disulfide bond
  4.    either end via a single disulfide bond
 Discuss Question
Answer: Option B. -> both ends by two disulfide bonds
Question 46.  The symptoms of retinol excess are
  1.    bone fragility
  2.    nausea
  3.    weakness
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Question 47.  Main function of insulin hormone is to
  1.    increase glycogen in liver
  2.    decrease glycogen in liver
  3.    increase blood sugar
  4.    decrease blood sugar
 Discuss Question
Answer: Option D. -> decrease blood sugar
Question 48.  Ascorbic acid acts as an
  1.    reducing agent
  2.    oxidizing agent
  3.    oxidizing and reducing agent both
  4.    none of the above
 Discuss Question
Answer: Option A. -> reducing agent
Question 49.  Which of the following are reduced coenzymes?
  1.    NADH and FADH2
  2.    NAD+ and FAD
  3.    ATP and GTP
  4.    Coenzyme A and ubiquinone
 Discuss Question
Answer: Option A. -> NADH and FADH2
Question 50.  Vitamin B12 (Cobalamin) is only synthesized by
  1.    fishes
  2.    micro-organisms
  3.    plants
  4.    animals
 Discuss Question
Answer: Option B. -> micro-organisms

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