Biochemistry Quiz
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Biochemistry 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 kinase
  • Phosphoenolpyruvate carboxykinase
  • Fructose-1,6-bisphosphatase (correct)
  • Hexokinase

    • Which molecule is produced as a result of the oxaloacetate decarboxylation reaction during gluconeogenesis?

  • Pyruvate
  • Acetyl-CoA
  • Phosphoenolpyruvate (correct)
  • Fructose-6-phosphate

    • What is the role of GTP in gluconeogenesis?

  • To act as a coenzyme for PEPCK
  • To activate F1,6BPase
  • To reduce F1,6BP to F6P
  • To release energy for phosphorylation (correct)

    • Which reaction in gluconeogenesis is a major point of control, similar to the regulation of glycolysis at the PFK-1 reaction?

    <p>F1,6BPase catalysis</p> Signup and view all the answers

    What is the function of phosphoenolpyruvate carboxykinase (PEPCK) in gluconeogenesis?

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

    What molecule does fructose-1,6-bisphosphate (F1,6BP) convert to during gluconeogenesis?

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

    Which enzyme is responsible for catalyzing the conversion of pyruvate to oxaloacetate in gluconeogenesis?

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

    What is the end product of gluconeogenesis?

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

    What is the role of fructose-1,6-bisphosphatase (F1,6BPase) in gluconeogenesis?

    <p>To convert fructose-6-phosphate to glucose-6-phosphate</p> Signup and view all the answers

    What is the function of GTP in gluconeogenesis?

    <p>To release energy for phosphorylation</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 produced as a result of the oxaloacetate decarboxylation reaction during gluconeogenesis?

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

    What is the role of GTP in gluconeogenesis?

    <p>To release energy for phosphorylation</p> Signup and view all the answers

    Which reaction in gluconeogenesis is a major point of control, similar to the regulation of glycolysis at the PFK-1 reaction?

    <p>F1,6BPase catalysis</p> Signup and view all the answers

    What is the function of phosphoenolpyruvate carboxykinase (PEPCK) in gluconeogenesis?

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

    What molecule does fructose-1,6-bisphosphate (F1,6BP) convert to during gluconeogenesis?

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

    Which enzyme is responsible for catalyzing the conversion of pyruvate to oxaloacetate in gluconeogenesis?

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

    What is the end product of gluconeogenesis?

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

    What is the role of fructose-1,6-bisphosphatase (F1,6BPase) in gluconeogenesis?

    <p>To convert fructose-6-phosphate to glucose-6-phosphate</p> Signup and view all the answers

    What is the function of GTP in gluconeogenesis?

    <p>To release energy for phosphorylation</p> Signup and view all the answers

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