Are you a Glycogen Regulation Pro?
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Questions and Answers

Which of the following is an allosteric activator of glycogen synthase b in both liver and muscle?

  • ATP
  • AMP
  • Glucose
  • Glucose 6-phosphate (correct)

    • What is the effect of low glucose and energy levels on glycogenolysis?

  • It remains the same
  • It is inhibited
  • It increases (correct)
  • It decreases

    • What is the effect of AMP on muscle glycogen phosphorylase?

  • It activates it (correct)
  • It phosphorylates it
  • It inhibits it
  • It has no effect

    • What is the effect of glucose 6-phosphate on glycogen phosphorylase a?

    <p>It inhibits it</p> Signup and view all the answers

    What is the role of allosteric regulation in glycogenesis and glycogenolysis?

    <p>It allows rapid response to the needs of a cell</p> Signup and view all the answers

    Which enzyme is responsible for glycogenolysis?

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

    What is the effect of high substrate availability and energy levels on glycogenesis?

    <p>It increases</p> Signup and view all the answers

    Which enzyme is allosterically activated by glucose 6-phosphate?

    <p>Glycogen synthase b</p> Signup and view all the answers

    What is the effect of ATP on glycogen phosphorylase a?

    <p>It inhibits it</p> Signup and view all the answers

    What is the function of allosteric regulation in relation to hormone-mediated covalent regulation?

    <p>It can override the effects of hormone-mediated covalent regulation</p> Signup and view all the answers

    Which of the following is an allosteric activator of glycogen synthase b in both liver and muscle?

    <p>Glucose 6-phosphate</p> Signup and view all the answers

    What is the effect of low glucose and energy levels on glycogenolysis?

    <p>It increases</p> Signup and view all the answers

    What is the effect of AMP on muscle glycogen phosphorylase?

    <p>It activates it</p> Signup and view all the answers

    What is the effect of glucose 6-phosphate on glycogen phosphorylase a?

    <p>It inhibits it</p> Signup and view all the answers

    What is the role of allosteric regulation in glycogenesis and glycogenolysis?

    <p>It allows rapid response to the needs of a cell</p> Signup and view all the answers

    Which enzyme is responsible for glycogenolysis?

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

    What is the effect of high substrate availability and energy levels on glycogenesis?

    <p>It increases</p> Signup and view all the answers

    Which enzyme is allosterically activated by glucose 6-phosphate?

    <p>Glycogen synthase b</p> Signup and view all the answers

    What is the effect of ATP on glycogen phosphorylase a?

    <p>It inhibits it</p> Signup and view all the answers

    What is the function of allosteric regulation in relation to hormone-mediated covalent regulation?

    <p>It can override the effects of hormone-mediated covalent regulation</p> Signup and view all the answers

    Which of the following is true about glycogenesis?

    <p>It is stimulated when substrate availability and energy levels are high</p> Signup and view all the answers

    What is the effect of glucose 6-phosphate on glycogen synthase b in both liver and muscle?

    <p>It is allosterically activated</p> Signup and view all the answers

    What is the effect of glucose 6-phosphate on glycogen phosphorylase a?

    <p>It is allosterically inhibited</p> Signup and view all the answers

    What is the effect of ATP on glycogen phosphorylase a?

    <p>It is allosterically inhibited</p> Signup and view all the answers

    What is the effect of AMP on muscle glycogen phosphorylase?

    <p>It is allosterically activated</p> Signup and view all the answers

    What is the effect of glucose and energy levels on glycogenolysis?

    <p>It is stimulated when glucose and energy levels are low</p> Signup and view all the answers

    Which enzyme responds to the levels of metabolites and energy needs of the cell?

    <p>Both glycogen synthase and glycogen phosphorylase</p> Signup and view all the answers

    What is the purpose of allosteric regulation in glycogen metabolism?

    <p>To override the effects of hormone-mediated covalent regulation</p> Signup and view all the answers

    Which molecule allosterically activates glycogen synthase b in both liver and muscle?

    <p>Glucose 6-phosphate</p> Signup and view all the answers

    Which molecule allosterically inhibits glycogen phosphorylase a?

    <p>Glucose 6-phosphate</p> Signup and view all the answers

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