Glycolysis Quiz
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Questions and Answers

What is the overall reaction of glycolysis?

  • Glucose + 2 NAD+ + 2 Pi + 2 ADP + 2 H+ $\rightarrow$ 2 pyruvate + 2 NADH + 2 ATP + 2 H2O + 2 H+ (correct)
  • Glucose + 2 NADH + 2 ATP $\rightarrow$ 2 pyruvate + 2 NAD+ + 2 Pi + 2 ADP
  • Glucose + 2 NAD+ + 2 Pi + 2 ATP $\rightarrow$ 2 pyruvate + 2 NADH + 2 ADP
  • Glucose + 2 NAD+ + 2 ADP $\rightarrow$ 2 pyruvate + 2 NADH + 2 ATP
  • Glucose + 2 NADH + 2 Pi + 2 ADP $\rightarrow$ 2 pyruvate + 2 NAD+ + 2 ATP
  • How are charges balanced in glycolysis?

  • By the binding of phosphate groups
  • By the difference between ADP and ATP (correct)
  • By the dissociation of NADH
  • By the liberation of oxygen atoms
  • What occurs in the investment phase of glycolysis?

  • More ATP is consumed than produced (correct)
  • NADH is generated
  • ATP is produced
  • Pyruvate is formed
  • What contributes to atom balance in glycolysis?

    <p>The presence of hydrogen phosphate anions</p> Signup and view all the answers

    How are oxygen atoms contributed in glycolysis?

    <p>Through the liberation of oxygen atoms from hydrogen phosphate anions</p> Signup and view all the answers

    What is another name for the citric acid cycle?

    <p>Szent-Györgyi-Krebs cycle</p> Signup and view all the answers

    What is the primary source of acetyl-CoA for the citric acid cycle?

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

    What is the main purpose of the citric acid cycle?

    <p>Generate energy</p> Signup and view all the answers

    What is the reducing agent produced by the citric acid cycle?

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

    What is regenerated by the sequence of reactions in the citric acid cycle?

    <p>Citric acid</p> Signup and view all the answers

    Study Notes

    Glycolysis Overview

    • Glycolysis is a metabolic pathway that converts glucose (C6H12O6) into pyruvate.
    • It occurs in the cytosol, the liquid part of cells, in most organisms.

    Energy Production

    • The free energy released in glycolysis is used to form high-energy molecules:
      • Adenosine triphosphate (ATP)
      • Reduced nicotinamide adenine dinucleotide (NADH)

    Enzymatic Reactions

    • Glycolysis is a sequence of 10 reactions catalyzed by enzymes.

    Evolutionary Significance

    • The widespread occurrence of glycolysis in other species suggests it is an ancient metabolic pathway.
    • Glycolysis can occur in oxygen-free conditions, similar to the Archean oceans, and can be catalyzed by metal ions rather than enzymes.

    Types of Glycolysis

    • The most common type of glycolysis is the Embden–Meyerhof–Parnas (EMP) pathway, discovered by Gustav Embden, Otto Meyerhof, and Jakub Karol Parnas.
    • Other types of glycolysis include:
      • Entner–Doudoroff pathway
      • Heterofermentative pathways
      • Homofermentative pathways

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    Description

    Test your knowledge of glycolysis with this quiz! Learn about the metabolic pathway that converts glucose into pyruvate, and its role in producing ATP and NADH. Challenge yourself with questions on the enzymes and reactions involved in this fundamental process.

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