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Glycolysis, the Krebs cycle and the electron transport chain

11th grade (Year 12 in England) · 11 questions · Common Core: NGSS.HS-LS1-7 · England: A level Biology: Respiration (extension)

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  1. Question 1

    Which stage of cellular respiration: happens in the mitochondrial matrix?

    • A. glycolysis
    • B. Krebs (citric acid) cycle
    • C. electron transport chain

  2. Question 2

    A poison blocks the electron transport chain. Why is it so dangerous?

    • A. Glycolysis speeds up and makes too much ATP
    • B. It only affects plants
    • C. Most ATP production stops, so cells quickly run out of energy
    • D. It makes extra oxygen

  3. Question 3

    Which stage of cellular respiration: happens in the mitochondrial matrix?

    • A. glycolysis
    • B. Krebs (citric acid) cycle
    • C. electron transport chain

  4. Question 4

    What is ATP?

    • A. a molecule that carries energy for use in cell processes
    • B. a waste product
    • C. a type of enzyme
    • D. a hormone

  5. Question 5

    Which stage of cellular respiration: happens in the mitochondrial matrix?

    • A. glycolysis
    • B. Krebs (citric acid) cycle
    • C. electron transport chain

  6. Question 6

    What is ATP?

    • A. a molecule that carries energy for use in cell processes
    • B. a waste product
    • C. a type of enzyme
    • D. a hormone

  7. Question 7

    Which stage of cellular respiration: happens in the cytoplasm?

    • A. glycolysis
    • B. Krebs (citric acid) cycle
    • C. electron transport chain

  8. Question 8

    A poison blocks the electron transport chain. Why is it so dangerous?

    • A. Glycolysis speeds up and makes too much ATP
    • B. Most ATP production stops, so cells quickly run out of energy
    • C. It makes extra oxygen
    • D. It only affects plants

  9. Question 9

    Which stage of cellular respiration: happens in the mitochondrial matrix?

    • A. glycolysis
    • B. Krebs (citric acid) cycle
    • C. electron transport chain

  10. Question 10

    Why do muscle cells contain many mitochondria with lots of folded inner membrane?

    • A. The folds store glucose
    • B. The folds give more space for the electron transport chain, making more ATP
    • C. The folds stop oxygen entering
    • D. The folds carry out photosynthesis

  11. Question 11

    Which stage of cellular respiration: makes most of the ATP?

    • A. glycolysis
    • B. Krebs (citric acid) cycle
    • C. electron transport chain

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Answer key: Glycolysis, the Krebs cycle and the electron transport chain

  1. 1. B. Krebs (citric acid) cycle

  2. 2. C. Most ATP production stops, so cells quickly run out of energy

  3. 3. B. Krebs (citric acid) cycle

  4. 4. A. a molecule that carries energy for use in cell processes

  5. 5. B. Krebs (citric acid) cycle

  6. 6. A. a molecule that carries energy for use in cell processes

  7. 7. A. glycolysis

  8. 8. B. Most ATP production stops, so cells quickly run out of energy

  9. 9. B. Krebs (citric acid) cycle

  10. 10. B. The folds give more space for the electron transport chain, making more ATP

  11. 11. C. electron transport chain