Glucose Metabolism Quiz
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Questions and Answers

Which enzyme catalyzes the conversion of fructose-1,6-bisphosphate to fructose-6-phosphate in gluconeogenesis?

  • Pyruvate dehydrogenase
  • Phosphoenolpyruvate carboxykinase
  • Fructose-1,6-bisphosphatase (correct)
  • GTPase
  • What molecule is produced by the decarboxylation of oxaloacetate in gluconeogenesis?

  • Phosphoenolpyruvate (correct)
  • Pyruvate
  • Glucose-6-phosphate
  • Fructose-6-phosphate
  • What is the role of GTP in gluconeogenesis?

  • It is used to enable phosphorylation by ATP in the second step of gluconeogenesis
  • It is produced by the decarboxylation of oxaloacetate
  • It is used to phosphorylate glucose in the first step of gluconeogenesis
  • It is used to phosphorylate fructose-6-phosphate in the last step of gluconeogenesis (correct)
  • What is the major point of control of gluconeogenesis at the F1,6BPase reaction?

    <p>The conversion of fructose-1,6-bisphosphate to fructose-6-phosphate</p> Signup and view all the answers

    Which enzyme catalyzes the conversion of pyruvate to oxaloacetate in gluconeogenesis?

    <p>Pyruvate carboxylase</p> Signup and view all the answers

    What is the role of PEPCK in gluconeogenesis?

    <p>To convert oxaloacetate to phosphoenolpyruvate</p> Signup and view all the answers

    What is the product of the F1,6BPase reaction in gluconeogenesis?

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

    Which molecule is used to phosphorylate fructose-6-phosphate in the last step of gluconeogenesis?

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

    What is the role of pyruvate carboxylase in gluconeogenesis?

    <p>To convert pyruvate to oxaloacetate</p> Signup and view all the answers

    Which reaction in gluconeogenesis is analogous to the PFK-1 reaction in glycolysis?

    <p>The conversion of fructose-1,6-bisphosphate to fructose-6-phosphate</p> Signup and view all the answers

    Which enzyme catalyzes the conversion of oxaloacetate to phosphoenolpyruvate in gluconeogenesis?

    <p>Phosphoenolpyruvate carboxykinase</p> Signup and view all the answers

    Which molecule is produced by the decarboxylation of oxaloacetate in gluconeogenesis?

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

    Which enzyme catalyzes the conversion of fructose-1,6-bisphosphate to fructose-6-phosphate in gluconeogenesis?

    <p>Fructose-1,6-bisphosphatase</p> Signup and view all the answers

    Which molecule is a major point of control of gluconeogenesis at the F1,6BPase reaction?

    <p>Fructose-1,6-bisphosphate</p> Signup and view all the answers

    Which molecule is converted to fructose-1,6-bisphosphate in glycolysis?

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

    Which enzyme catalyzes the conversion of glucose-6-phosphate to glucose in gluconeogenesis?

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

    Which molecule is produced from the decarboxylation of pyruvate in gluconeogenesis?

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

    Which enzyme catalyzes the conversion of glucose to glucose-6-phosphate in glycolysis?

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

    Which molecule is produced from the decarboxylation of pyruvate in the TCA cycle?

    <p>Acetyl-CoA</p> Signup and view all the answers

    Which enzyme catalyzes the conversion of fructose-6-phosphate to glucose-6-phosphate in glycolysis?

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

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