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MCQs

Total Questions : 173 | Page 11 of 18 pages
Question 101. An intermediate of the citric acid cycle that undergoes reductive amination with glutamine as nitrogen donor is
  1.    α-ketoglutarate
  2.    Glutamine
  3.    NADPH
  4.    H⁺
 Discuss Question
Answer: Option A. -> α-ketoglutarate
Answer: (a).α-ketoglutarate
Question 102. Conversion of nitrogen to ammonia or nitrogenous compounds is termed as
  1.    Nitrogen fixation
  2.    Nitrification
  3.    Denitrification
  4.    Nitrogen assimilation
 Discuss Question
Answer: Option A. -> Nitrogen fixation
Answer: (a).Nitrogen fixation
Question 103. Which of the following catalyzes reactions that incorporate nitrogen derived from glutamine?
  1.    Glutamine amidotransferase
  2.    Adenylyltransferase
  3.    Glutamate synthase
  4.    Glutamine synthase
 Discuss Question
Answer: Option A. -> Glutamine amidotransferase
Answer: (a).Glutamine amidotransferase
Question 104. Ammonia or ammonium is oxidized to nitrite followed by the oxidation of nitrite to nitrate is called as
  1.    Nitrogen fixation
  2.    Nitrification
  3.    Denitrification
  4.    Nitrogen assimilation
 Discuss Question
Answer: Option B. -> Nitrification
Answer: (b).Nitrification
Question 105. Formation of organic nitrogen compounds like amino acids from inorganic nitrogen compounds is called as
  1.    Nitrogen fixation
  2.    Nitrification
  3.    Denitrification
  4.    Nitrogen assimilation
 Discuss Question
Answer: Option D. -> Nitrogen assimilation
Answer: (d).Nitrogen assimilation
Question 106. Phosphoribosyl pyrophosphate is a precursor of tryptophan and
  1.    Tyrosine
  2.    Histidine
  3.    Phenylalanine
  4.    Isoleucine
 Discuss Question
Answer: Option B. -> Histidine
Answer: (b).Histidine
Question 107. Tyrosine gives rise to a family of catecholamines that does not include
  1.    Dopamine
  2.    Norepinephrine
  3.    Epinephrine
  4.    Cortisol
 Discuss Question
Answer: Option D. -> Cortisol
Answer: (d).Cortisol
Question 108. Which of the following gives rise to γ-amino butyrate?
  1.    Glutamate synthase
  2.    Glutamate decarboxylation
  3.    Glutamine synthase
  4.    Pyruvate decarboxylation
 Discuss Question
Answer: Option B. -> Glutamate decarboxylation
Answer: (b).Glutamate decarboxylation
Question 109. Which of the following is the precursor for nitric oxide?
  1.    Arginine
  2.    Leucine
  3.    Isoleucine
  4.    Lysine
 Discuss Question
Answer: Option A. -> Arginine
Answer: (a).Arginine
Question 110. Which of the following is an important cellular reducing agent?
  1.    Glutathione
  2.    Glycine
  3.    Arginine
  4.    Porphirin
 Discuss Question
Answer: Option A. -> Glutathione
Answer: (a).Glutathione

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