Stage 1: Glycolysis (HL)
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Questions and Answers

What is the initial molecule that undergoes conversion during glycolysis?

  • Fructose
  • Acetyl CoA
  • Pyruvic acid
  • Glucose (correct)
  • What is the main energy product of glycolysis?

  • 4 ATP
  • 3 ATP
  • 2 ATP (correct)
  • 1 ATP
  • Where does glycolysis occur within the cell?

  • Ribosomes
  • Mitochondria
  • Cytosol (correct)
  • Nucleus
  • Why does glycolysis produce a low yield of energy?

    <p>Glucose is only partially broken down. (B)</p> Signup and view all the answers

    What is the role of NADH in glycolysis?

    <p>It serves as an electron carrier. (D)</p> Signup and view all the answers

    Study Notes

    Stage 1: Glycolysis (HL)

    • Glycolysis takes place in the cytosol (cytoplasm minus organelles) of the cell
    • No oxygen is required, making it an anaerobic process
    • Glucose (a 6-carbon molecule) is converted to pyruvic acid (a 3-carbon molecule)
    • A small amount of energy is released during this process
    • This energy is used to make 2 adenosine triphosphate (ATP) molecules by combining adenosine diphosphate (ADP) with a phosphate (P)
    • Glucose is only partially broken down in glycolysis, resulting in a low energy yield.
    • Products of glycolysis include 2 ATP, 2 NADH, 2 pyruvate, and water.

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    Description

    This quiz covers the essential aspects of glycolysis, an anaerobic process that occurs in the cytosol of the cell. It focuses on the conversion of glucose to pyruvic acid, the energy yield in terms of ATP production, and the products formed during the process. Test your knowledge on this fundamental metabolic pathway in cellular respiration.

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