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MCQs

Total Questions : 173 | Page 12 of 18 pages
Question 111. Glutathione peroxidase contains a covalently bound
  1.    Selenium atom
  2.    Calcium atom
  3.    Magnesium atom
  4.    Copper atom
 Discuss Question
Answer: Option A. -> Selenium atom
Answer: (a).Selenium atom
Question 112. An amino group donated by glutamine is attached at C-1 of PRPP, this results in
  1.    5-phosphoribosylamine
  2.    4-phosphoribosylamine
  3.    3-phosphoribosylamine
  4.    2-phosphoribosylamine
 Discuss Question
Answer: Option A. -> 5-phosphoribosylamine
Answer: (a).5-phosphoribosylamine
Question 113. Which of the following is an important precursor in purine pathway?
  1.    Glycine
  2.    Aspartate
  3.    Glutamine
  4.    Leucine
 Discuss Question
Answer: Option A. -> Glycine
Answer: (a).Glycine
Question 114. The first intermediate with a complete purine ring is
  1.    Inosinate
  2.    Formate
  3.    Aspartate
  4.    Glycine
 Discuss Question
Answer: Option A. -> Inosinate
Answer: (a).Inosinate
Question 115. Which of the following is an important precursor in pyrimidine pathway?
  1.    Glycine
  2.    Aspartate
  3.    Glutamine
  4.    Leucine
 Discuss Question
Answer: Option B. -> Aspartate
Answer: (b).Aspartate
Question 116. In the first committed step of pyrimidine biosynthesis, the reaction is catalyzed by
  1.    Adenylate kinase
  2.    Aspartate transcarbamoylase
  3.    Dihyhroorotase
  4.    Cytidylate synthase
 Discuss Question
Answer: Option B. -> Aspartate transcarbamoylase
Answer: (b).Aspartate transcarbamoylase
Question 117. CTP is formed from UTP by the action of
  1.    Adenylate kinase
  2.    Aspartate transcarbamoylase
  3.    Dihyhroorotase
  4.    Cytidylate synthase
 Discuss Question
Answer: Option D. -> Cytidylate synthase
Answer: (d).Cytidylate synthase
Question 118. Adenosine deaminase deaminates adenosine to
  1.    Hypoxanthine
  2.    Inosine
  3.    Xanthine
  4.    Guanosine
 Discuss Question
Answer: Option B. -> Inosine
Answer: (b).Inosine
Question 119. Phosphorylation of AMP to ADP is promoted by
  1.    Adenylate kinase
  2.    Aspartate transcarbamoylase
  3.    Dihyhroorotase
  4.    Cytidylate synthase
 Discuss Question
Answer: Option A. -> Adenylate kinase
Answer: (a).Adenylate kinase
Question 120. Conversion of dUMP to dTMP is catalyzed by
  1.    Thymidylate synthase
  2.    Dihydrofolate reductase
  3.    Dihyhroorotase
  4.    Cytidylate synthase
 Discuss Question
Answer: Option A. -> Thymidylate synthase
Answer: (a).Thymidylate synthase

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