Gluconeogenesis Quiz
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Questions and Answers

Which step in gluconeogenesis is the most energy-demanding?

  • Hexokinase
  • Phosphofructokinase 1
  • Phosphoenolpyruvate synthesis from pyruvate (correct)
  • Pyruvate kinase
  • What is the purpose of coupling decarboxylation with phosphoenolpyruvate synthesis from pyruvate?

  • To increase the rate of the reaction
  • To reduce the amount of ATP needed
  • To overcome an energetic barrier (correct)
  • To produce energy
  • What is the four-carbon compound that pyruvate must be carboxylated to before decarboxylation can happen?

  • Succinate
  • Oxaloacetate (correct)
  • Glucose
  • Fructose
  • Which compound is a three-carbon compound in both glycolysis and gluconeogenesis?

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

    Which compound is not involved in gluconeogenesis?

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

    Which step in gluconeogenesis requires the input of ATP?

    <p>Pyruvate carboxylation</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 step in glycolysis is bypassed in gluconeogenesis?

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

    Which compound is a product of gluconeogenesis?

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

    Which step in gluconeogenesis is the most energy-demanding?

    <p>Phosphoenolpyruvate synthesis from pyruvate</p> Signup and view all the answers

    What is the purpose of coupling decarboxylation with phosphoenolpyruvate synthesis from pyruvate?

    <p>To overcome an energetic barrier</p> Signup and view all the answers

    What is the four-carbon compound that pyruvate must be carboxylated to before decarboxylation can happen?

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

    Which compound is a three-carbon compound in both glycolysis and gluconeogenesis?

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

    Which enzyme is not used in gluconeogenesis?

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

    Which compound is not involved in gluconeogenesis?

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

    Which step in gluconeogenesis requires the input of ATP?

    <p>Pyruvate carboxylation</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 step in glycolysis is bypassed in gluconeogenesis?

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

    Which compound is a product of gluconeogenesis?

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

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