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MCQs

Total Questions : 26 | Page 1 of 3 pages
Question 1.  Histidine is degraded to α-ketoglutarate and is described as a
  1.    gluco amino acid
  2.    glucogenic amino acid
  3.    ketogenic amino acid
  4.    keto-gluco amino acid
 Discuss Question
Answer: Option B. -> glucogenic amino acid
Question 2.  Which of the following amino acids is considered as both ketogenic and glucogenic?
  1.    Valine
  2.    Tryptophan
  3.    Lysine
  4.    None of these
 Discuss Question
Answer: Option B. -> Tryptophan
Question 3.  Oxidative deamination is the conversion of an amino
  1.    group from an amino acid to a keto acid
  2.    acid to a carboxylic acid plus ammonia
  3.    acid to a keto acid plus ammonia
  4.    group from an amino acid to a carboxylic acid
 Discuss Question
Answer: Option C. -> acid to a keto acid plus ammonia
Question 4.  A person with phenylketonuria cannot convert
  1.    phenylalanine to tyrosine
  2.    phenylalanine to isoleucine
  3.    phenol into ketones
  4.    phenylalanine to lysine
 Discuss Question
Answer: Option A. -> phenylalanine to tyrosine
Question 5.  A glucogenic amino acid is one which is degraded to
  1.    keto-sugars
  2.    either acetyl CoA or acetoacetyl CoA
  3.    pyruvate or citric acid cycle intermediates
  4.    none of the above
 Discuss Question
Answer: Option C. -> pyruvate or citric acid cycle intermediates
Question 6.  Which of the following is the best described glucogenic amino acid?
  1.    Lysine
  2.    Tryptophan
  3.    Valine
  4.    None of these
 Discuss Question
Answer: Option C. -> Valine
Question 7.  An example of a transamination process is
  1.    glutamate = hexanoic acid + NH3
  2.    aspartate + hexanoic acid = glutamate + oxaloacetate
  3.    aspartate + α ketoglutarate = glutamate + oxaloacetate
  4.    glutamate = α-ketoglutarate + NH3
 Discuss Question
Answer: Option C. -> aspartate + α ketoglutarate = glutamate + oxaloacetate
Question 8.  Transamination is the process where
  1.    carboxyl group is transferred from amino acid
  2.    α-amino group is removed from the amino acid
  3.    polymerisation of amino acid takes place
  4.    none of the above
 Discuss Question
Answer: Option B. -> α-amino group is removed from the amino acid
Question 9. . An example of the oxidative deamination is
  1.    glutamate = hexanoic acid + NH3
  2.    aspartate + α-ketoglutarate = glutamate + oxaloacetate
  3.    glutamate = α-ketoglutarate + NH3
  4.    aspartate + hexanoic acid = glutamate + Oxaloacetate
 Discuss Question
Answer: Option C. -> glutamate = α-ketoglutarate + NH3
Question 10. . Transaminase enzymes are present in
  1.    liver
  2.    pancreas
  3.    intestine
  4.    none of these
 Discuss Question
Answer: Option A. -> liver

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