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MCQs

Total Questions : 93 | Page 3 of 10 pages
Question 21. E.coli ACP has its molecular weight as around
  1.    19000
  2.    90,000
  3.    9000
  4.    39000
 Discuss Question
Answer: Option C. -> 9000
Question 22. Dihydroorotate dehydrogenase contains
  1.    2 flavins and 2 atoms of iron per molecule
  2.    2 flavins and 4 atoms of iron per molecule
  3.    4 flavins and 4 atoms of iron per molecule
  4.    4 flavins and 2 atoms of iron per molecule
 Discuss Question
Answer: Option C. -> 4 flavins and 4 atoms of iron per molecule
Question 23. The vitamin niacin is part of the __________ molecule.
  1.    ferredoxin
  2.    pyrophosphate
  3.    pyridoxal phosphate
  4.    NAD+
 Discuss Question
Answer: Option D. -> NAD+
Question 24. Vitamin-C is considered as a
  1.    fat soluble
  2.    none of these
  3.    water soluble
  4.    fat and water soluble
 Discuss Question
Answer: Option C. -> water soluble
Question 25. Which of these hormones is a catecholamine?
  1.    Tetrahydrofolate
  2.    Norepinephrine
  3.    Tetraiodothyronine
  4.    Follitropin
 Discuss Question
Answer: Option B. -> Norepinephrine
Question 26. The vitamin riboflavin is part of the __________ molecule.
  1.    ferredoxin
  2.    pyridoxal phosphat
  3.    FAD
  4.    pyrophosphate
 Discuss Question
Answer: Option C. -> FAD
Question 27. Lipoic acid is a co-factor of the
  1.    pyruvic dehydrogenase
  2.    α-ketoglutaric dehydrogenase
  3.    di-hydroorotate dehydrogenase
  4.    both (a) and (b)
 Discuss Question
Answer: Option D. -> both (a) and (b)
Question 28. β-carotene together with α-carotene, γ-carotene and cryptoxanthine are synthesized by
  1.    plants and animals both
  2.    plants
  3.    none of these
  4.    animal
 Discuss Question
Answer: Option B. -> plants
Question 29. The most prominent role that tocopherol has in in-vitro systems is as a strong
  1.    antioxidants
  2.    oxidizing agent
  3.    reducing agent
  4.    all of these
 Discuss Question
Answer: Option A. -> antioxidants
Question 30. Biotin occurs mainly in combined forms bound to protein through
  1.    ε-N-lysine moiety
  2.    ε-N-lipoyl - L-lysine
  3.    ε-N-biotinyl-L-lysine
  4.    ε-S-lysine moiety
 Discuss Question
Answer: Option A. -> ε-N-lysine moiety

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