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MCQs

Total Questions : 20 | Page 2 of 2 pages
Question 11. Tyrosine is degraded to acetoacetyl CoA and fumarate and is described as a
  1.    ketogenic and glucogenic amino acid
  2.    glucogenic amino acid
  3.    keto-gluco amino acid
  4.    ketogenic amino acid
 Discuss Question
Answer: Option A. -> ketogenic and glucogenic amino acid
Question 12. A person with phenylketonuria will convert
  1.    phenylalanine to phenylpyruvate
  2.    phenylpyruvate to phenylalanine
  3.    phenylalanine to isoleucine
  4.    tyrosine to phenylalanine
 Discuss Question
Answer: Option A. -> phenylalanine to phenylpyruvate
Question 13. An example of the oxidative deamination 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 C. -> glutamate = α-ketoglutarate + NH3
Question 14. In the normal breakdown of phenylalanine, it is initially degraded to
  1.    lysine
  2.    phenylpuruvate
  3.    tyrosine
  4.    fumarate
 Discuss Question
Answer: Option C. -> tyrosine
Question 15. Transaminase enzymes are present in
  1.    pancreas
  2.    none of these
  3.    liver
  4.    intestine
 Discuss Question
Answer: Option C. -> liver
Question 16. A person suffering from phenylketonuria on consumption food containing high phenylalanine may lead to the accumulation of
  1.    tyrosine
  2.    isoleucine
  3.    phenylalanine
  4.    phenylpyruvate
 Discuss Question
Answer: Option D. -> phenylpyruvate
Question 17. A best described ketogenic amino acid is
  1.    lysine
  2.    tryptophan
  3.    valine
  4.    none of these
 Discuss Question
Answer: Option A. -> lysine
Question 18. Lysine is degraded to acetoacetyl CoA and is described as a
  1.    glucogenic amino acid
  2.    keto-gluco amino acid
  3.    none of these
  4.    ketogenic amino acid
 Discuss Question
Answer: Option D. -> ketogenic amino acid
Question 19. A ketogenic amino acid is one which degrades to
  1.    multiple intermediates including pyruvate or citric acid cycle intermediates and acetyl CoA or acetoacetyl CoA
  2.    keto-sugars
  3.    either acetyl CoA or acetoacetyl CoA
  4.    pyruvate or citric acid cycle intermediates
 Discuss Question
Answer: Option C. -> either acetyl CoA or acetoacetyl CoA
Question 20. Transamination is the transfer of an amino
  1.    group from an amino acid to a carboxylic acid
  2.    acid to a carboxylic acid plus ammonia
  3.    group from an amino acid to a keto acid
  4.    acid to a keto acid plus ammonia
 Discuss Question
Answer: Option C. -> group from an amino acid to a keto acid

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