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MCQs

Total Questions : 20 | Page 1 of 2 pages
Question 1. Which of the following amino acids is considered as both ketogenic and glucogenic?
  1.    None of these
  2.    Tryptophan
  3.    Valine
  4.    Lysine
 Discuss Question
Answer: Option B. -> Tryptophan
Question 2. Histidine is degraded to α-ketoglutarate and is described as a
  1.    ketogenic amino acid
  2.    glucogenic amino acid
  3.    gluco amino acid
  4.    keto-gluco amino acid
 Discuss Question
Answer: Option B. -> glucogenic amino acid
Question 3. A glucogenic amino acid is one which is degraded to
  1.    pyruvate or citric acid cycle intermediates
  2.    keto-sugars
  3.    either acetyl CoA or acetoacetyl CoA
  4.    None of these
 Discuss Question
Answer: Option A. -> pyruvate or citric acid cycle intermediates
Question 4. Which of the following is the best described glucogenic amino acid?
  1.    Lysine
  2.    Valine
  3.    Tryptophan
  4.    None of these
 Discuss Question
Answer: Option B. -> Valine
Question 5. A person with phenylketonuria cannot convert
  1.    phenylalanine to isoleucine
  2.    phenylalanine to tyrosine
  3.    phenylalanine to lysine
  4.    phenol into ketones
 Discuss Question
Answer: Option B. -> phenylalanine to tyrosine
Question 6. Oxidative deamination is the conversion of an amino
  1.    group from an amino acid to a keto acid
  2.    group from an amino acid to a carboxylic acid
  3.    acid to a keto acid plus ammonia
  4.    acid to a carboxylic acid plus ammonia
 Discuss Question
Answer: Option C. -> acid to a keto acid plus ammonia
Question 7. An example of a transamination process is
  1.    aspartate + α ketoglutarate = glutamate + oxaloacetate
  2.    glutamate = hexanoic acid + NH3
  3.    glutamate = α-ketoglutarate + NH3
  4.    aspartate + hexanoic acid = glutamate + oxaloacetate
 Discuss Question
Answer: Option A. -> aspartate + α ketoglutarate = glutamate + oxaloacetate
Question 8. Transamination is the process where
  1.    α-amino group is removed from the amino acid
  2.    carboxyl group is transferred from amino acid
  3.    polymerisation of amino acid takes place
  4.    None of these
 Discuss Question
Answer: Option A. -> α-amino group is removed from the amino acid
Question 9. The most toxic compounds is
  1.    tyrosine
  2.    phenylalanine
  3.    phenylpyruvate
  4.    lysine
 Discuss Question
Answer: Option C. -> phenylpyruvate
Question 10. A person with phenylketonuria is advised not to consume which of the following products?
  1.    Glycine containing foods
  2.    Aspartame
  3.    Fat containing food
  4.    Glucose
 Discuss Question
Answer: Option B. -> Aspartame

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