Cellular Respiration Pathways
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Questions and Answers

Where does the process of glycolysis occur?

  • Inner mitochondrial membrane
  • Nuclear membrane
  • Mitochondrial matrix
  • Cytoplasm (correct)
  • What is the net gain of ATP in the process of glycolysis?

  • 2 ATP (correct)
  • 1 ATP
  • 3 ATP
  • 4 ATP
  • What is the byproduct of the electron transport chain?

  • Water (correct)
  • Glucose
  • Pyruvate
  • Carbon dioxide
  • How many NADH molecules are generated in the Krebs cycle per acetyl-CoA?

    <p>3 NADH</p> Signup and view all the answers

    What is the mechanism by which ATP is produced in the electron transport chain?

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

    What is the primary purpose of the Electron Transport Chain in cellular respiration?

    <p>To generate ATP from the energy released by the movement of protons</p> Signup and view all the answers

    How do the products of the Krebs Cycle contribute to the Electron Transport Chain?

    <p>They donate electrons to the Electron Transport Chain</p> Signup and view all the answers

    What is the net energy yield of the Krebs Cycle per acetyl-CoA?

    <p>1 ATP, 3 NADH, and 1 FADH2</p> Signup and view all the answers

    What is the primary difference between the location of glycolysis and the Krebs Cycle?

    <p>Glycolysis occurs in the cytoplasm, while the Krebs Cycle occurs in the mitochondrial matrix</p> Signup and view all the answers

    What is the ultimate fate of the electrons passed through the Electron Transport Chain?

    <p>They are used to reduce oxygen to form water</p> Signup and view all the answers

    Study Notes

    Glycolysis

    • Occurs in the cytoplasm
    • Converts glucose to pyruvate
    • Produces a net gain of 2 ATP and 2 NADH molecules

    Krebs Cycle (Citric Acid Cycle)

    • Takes place in the mitochondrial matrix
    • Each turn of the cycle converts acetyl-CoA into CO2
    • Generates 3 NADH, 1 FADH2, and 1 ATP (or GTP) per acetyl-CoA

    Electron Transport Chain (ETS)

    • Located in the inner mitochondrial membrane
    • Electrons from NADH and FADH2 are passed through the chain
    • Ultimately reduces oxygen to water
    • Produces a large amount of ATP via a proton gradient (chemiosmosis)

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    Description

    Identify the key products of major cellular respiration pathways including glycolysis, the Krebs cycle, and the electron transport chain. Learn how these processes generate energy for the cell and the byproducts they produce.

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