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MCQs

Total Questions : 26 | Page 2 of 3 pages
Question 11.  The most toxic compounds is
  1.    tyrosine
  2.    phenylpyruvate
  3.    lysine
  4.    phenylalanine
 Discuss Question
Answer: Option B. -> phenylpyruvate
Question 12. . Tyrosine is degraded to acetoacetyl CoA and fumarate and is described as a
  1.    glucogenic amino acid
  2.    ketogenic amino acid
  3.    ketogenic and glucogenic amino acid
  4.    keto-gluco amino acid
 Discuss Question
Answer: Option C. -> ketogenic and glucogenic amino acid
Question 13. . A person with phenylketonuria will convert
  1.    phenylalanine to phenylpyruvate
  2.    phenylalanine to isoleucine
  3.    phenylpyruvate to phenylalanine
  4.    tyrosine to phenylalanine
 Discuss Question
Answer: Option A. -> phenylalanine to phenylpyruvate
Question 14. . A person with phenylketonuria is advised not to consume which of the following products?
  1.    Glycine containing foods
  2.    Fat containing food
  3.    Glucose
  4.    Aspartame
 Discuss Question
Answer: Option D. -> Aspartame
Question 15. . In the normal breakdown of phenylalanine, it is initially degraded to
  1.    fumarate
  2.    tyrosine
  3.    lysine
  4.    phenylpuruvate
 Discuss Question
Answer: Option B. -> tyrosine
Question 16. . A ketogenic amino acid is one which degrades to
  1.    keto-sugars
  2.    either acetyl CoA or acetoacetyl CoA
  3.    pyruvate or citric acid cycle intermediates
  4.    multiple intermediates including pyruvate or citric acid cycle intermediates and acetyl CoA or acetoacetyl CoA
 Discuss Question
Answer: Option B. -> either acetyl CoA or acetoacetyl CoA
Question 17. . Transamination is the transfer of an amino
  1.    acid to a carboxylic acid plus ammonia
  2.    group from an amino acid to a keto acid
  3.    acid to a keto acid plus ammonia
  4.    group from an amino acid to a carboxylic acid
 Discuss Question
Answer: Option B. -> group from an amino acid to a keto acid
Question 18. . A best described ketogenic amino acid is
  1.    lysine
  2.    tryptophan
  3.    valine
  4.    none of these
 Discuss Question
Answer: Option A. -> lysine
Question 19. . Lysine is degraded to acetoacetyl CoA and is described as a
  1.    ketogenic amino acid
  2.    glucogenic amino acid
  3.    keto-gluco amino acid
  4.    none of these
 Discuss Question
Answer: Option A. -> ketogenic amino acid
Question 20. . A person suffering from phenylketonuria on consumption food containing high phenylalanine may lead to the accumulation of
  1.    phenylalanine
  2.    phenylpyruvate
  3.    tyrosine
  4.    isoleucine
 Discuss Question
Answer: Option B. -> phenylpyruvate

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