Glycolysis Pathway Quiz
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Questions and Answers

Which pathway do cells use to transform sugars like glucose into biochemical energy in the form of ATP?

  • Electron transport chain
  • Photosynthesis
  • Glycolysis (correct)
  • Krebs cycle

    • What is the final product of glycolysis?

  • ATP
  • Glucose
  • Pyruvate (correct)
  • NADH

    • How many enzymatic reactions are involved in the process of glycolysis?

  • 10 (correct)
  • 12
  • 5
  • 7

    • What is the purpose of glycolysis in the cell?

    <p>To produce ATP</p> Signup and view all the answers

    Which step of glycolysis is an irreversible reaction?

    <p>Kinase (Hexokinase) reaction</p> Signup and view all the answers

    What is the product of the lyase (Fructose bisphosphate aldolase) reaction in glycolysis?

    <p>Dihydroxyacetone phosphate &amp; Glyceraldehyde-3-phosphate</p> Signup and view all the answers

    How many ATP molecules are consumed in the first two steps of glycolysis?

    <p>2</p> Signup and view all the answers

    Which step of glycolysis produces NADH?

    <p>Step 6</p> Signup and view all the answers

    How many NADH molecules are produced in glycolysis?

    <p>2</p> Signup and view all the answers

    What are the next steps after glycolysis for the production of more ATP?

    <p>Electron transport &amp; chain Krebs cycle</p> Signup and view all the answers

    Which molecule is formed in step 7 of glycolysis?

    <p>ATP &amp; 3-phosphoglycerate</p> Signup and view all the answers

    Which step in glycolysis involves a mutase reaction?

    <p>Step 9</p> Signup and view all the answers

    Which molecule is formed in step 9 of glycolysis?

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

    Which step in glycolysis involves a kinase reaction that is irreversible?

    <p>Final step</p> Signup and view all the answers

    How many pyruvate molecules are formed for each glucose broken down in glycolysis?

    <p>2</p> Signup and view all the answers

    What is the role of ATP in glycolysis?

    <p>To donate a phosphate group to ADP</p> Signup and view all the answers

    How does the entry of glucose 6-phosphate at the 2nd step affect the number of ATPs produced by glycolysis?

    <p>Decreases it</p> Signup and view all the answers

    Which molecule can enter the glycolysis pathway at the 2nd step when an animal breaks down glycogen?

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

    What are the products of glycolysis that can be used in aerobic respiration to produce more energy?

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

    What is the role of ATP in the final step of glycolysis?

    <p>To donate a phosphate group to ADP</p> Signup and view all the answers

    Study Notes

    Glycolysis Pathway

    • Cells transform sugars like glucose into biochemical energy in the form of ATP through the glycolysis pathway.

    Glycolysis Overview

    • The final product of glycolysis is pyruvate.
    • Glycolysis involves 10 enzymatic reactions.

    Purpose and Regulation

    • The purpose of glycolysis in the cell is to convert glucose into energy.
    • The step catalyzed by phosphofructokinase-1 is an irreversible reaction.

    Reactions and Products

    • The product of the lyase (Fructose bisphosphate aldolase) reaction in glycolysis is fructose-1,6-bisphosphate.
    • 2 ATP molecules are consumed in the first two steps of glycolysis.
    • The step that produces NADH is the glyceraldehyde-3-phosphate dehydrogenase reaction.
    • 2 NADH molecules are produced in glycolysis.

    Next Steps and ATP Production

    • After glycolysis, the next steps for producing more ATP are the citric acid cycle and oxidative phosphorylation.
    • In step 7 of glycolysis, glyceraldehyde-3-phosphate is formed.
    • The phosphoglycerate mutase reaction (step 8) involves a mutase reaction.
    • In step 9 of glycolysis, 3-phosphoglycerate is formed.
    • The phosphofructokinase-1 reaction (step 1) involves a kinase reaction that is irreversible.
    • 2 pyruvate molecules are formed for each glucose broken down in glycolysis.

    ATP's Role

    • ATP is consumed in the early stages of glycolysis and produced in the later stages.
    • The entry of glucose 6-phosphate at the 2nd step does not affect the number of ATPs produced by glycolysis.
    • Glycogen can be broken down into glucose 1-phosphate, which enters glycolysis at the 2nd step.

    Products and Aerobic Respiration

    • The products of glycolysis that can be used in aerobic respiration to produce more energy are NADH, FADH2, and pyruvate.
    • ATP is produced in the final step of glycolysis.

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    Description

    Test your knowledge of glycolysis pathway with this quiz! Explore the reversible steps involving kinase reactions, mutase reactions, and lyase reactions. Challenge yourself to understand the formation of ATP and the rearrangement of phosphates in various compounds.

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