Mastering Glycogen Metabolism
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Questions and Answers

What is the committed step for glycogen synthesis?

  • Adding UDP-glucose to the glycogen chain (correct)
  • Cleaving α(1-4) bonds
  • Adding inorganic phosphate
  • Breaking down glycogen into glucose
  • What is the regulatory enzyme for glycogen synthesis?

  • Glycogen debranching enzyme
  • Glycogen synthase (correct)
  • Hexokinase
  • Glycogen phosphorylase
  • Which enzyme is responsible for cleaving α(1-4) bonds in glycogen degradation?

  • Glycogen phosphorylase (correct)
  • Hexokinase
  • Glycogen debranching enzyme
  • Glycogen synthase
  • What is the cofactor needed for glycogen phosphorylase?

    <p>Vitamin B6</p> Signup and view all the answers

    What type of bonds can glycogen phosphorylase cleave?

    <p>α(1-4) bonds</p> Signup and view all the answers

    How many glucose residues away from a branching point can glycogen phosphorylase cleave?

    <p>4 or more glucose residues</p> Signup and view all the answers

    What is the role of glycogen debranching enzyme in glycogen degradation?

    <p>Cleaves α(1-6) bonds</p> Signup and view all the answers

    Which enzyme is responsible for adding inorganic phosphate in glycogen degradation?

    <p>Glycogen phosphorylase</p> Signup and view all the answers

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