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MCQs

Total Questions : 26 | Page 3 of 3 pages
Question 21. . 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 22. . 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 23. . 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 24. . 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
Question 25. . 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 26. . A best described ketogenic amino acid is
  1.    lysine
  2.    tryptophan
  3.    valine
  4.    none of these
 Discuss Question
Answer: Option A. -> lysine

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