Amino Acids and Glucose Synthesis
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Questions and Answers

Which of the following compounds can serve as substrates for the synthesis of glucose?

  • Leucine
  • α-ketoglutarate (correct)
  • Acetyl CoA
  • Lysine
  • Which of the following amino acids are glucogenic?

  • Lysine and leucine
  • Aspartate and glutamate (correct)
  • Alanine and proline
  • Cysteine and glycine
  • Which of the following compounds cannot be used for the synthesis of glucose?

  • OAA
  • Acetyl CoA (correct)
  • α-ketoglutarate
  • PEP
  • What is the direct precursor of PEP?

    <p>OAA</p> Signup and view all the answers

    What happens to lysine and leucine in the process of glucose synthesis?

    <p>They produce ketone bodies</p> Signup and view all the answers

    Why can't acetyl CoA be used for the synthesis of glucose?

    <p>Because it was converted from pyruvate (3C)</p> Signup and view all the answers

    Which of the following amino acids cannot be used as a substrate for glucose synthesis?

    <p>Alanine</p> Signup and view all the answers

    Which metabolic pathway do α-ketoacids derived from glucogenic amino acids enter?

    <p>Krebs cycle</p> Signup and view all the answers

    What is the direct precursor of PEP during glucose synthesis?

    <p>OAA</p> Signup and view all the answers

    What happens to amino acids that are not glucogenic or ketogenic?

    <p>They are converted into fatty acids</p> Signup and view all the answers

    Which amino acid is both glucogenic and ketogenic?

    <p>Tyrosine</p> Signup and view all the answers

    What are compounds that produce only acetyl CoA termed when they cannot be used for glucose synthesis?

    <p>Ketogenic</p> Signup and view all the answers

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