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Breathing, gas exchange and respiration

7th grade (Year 8 in England) · 11 questions · Common Core: NGSS.MS-LS1-7, NGSS.HS-LS1-7 · England: KS3 Biology: Gas exchange systems, KS3 Biology: Cellular respiration, KS4 Combined Science: Cell biology

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  1. Question 1

    Where does gas exchange happen in the lungs?

    • A. in the alveoli (air sacs)
    • B. in the ribs
    • C. in the trachea
    • D. in the diaphragm

  2. Question 2

    Respiration: which statement is NOT true?

    • A. Respiration happens in every living cell.
    • B. Respiration means breathing.
    • C. Mitochondria are where aerobic respiration happens.
    • D. Plants respire as well as photosynthesise.

  3. Question 3

    Yeast respiring without oxygen produces…

    • A. water only
    • B. ethanol (alcohol) and carbon dioxide
    • C. oxygen and glucose
    • D. lactic acid only

  4. Question 4

    Respiration: which statement is NOT true?

    • A. Mitochondria are where aerobic respiration happens.
    • B. Plants respire as well as photosynthesise.
    • C. We breathe out only carbon dioxide.
    • D. Respiration happens in every living cell.

  5. Question 5

    Complete the word equation for aerobic respiration: glucose + oxygen → carbon dioxide + ___

    • A. lactic acid
    • B. oxygen
    • C. water
    • D. nitrogen

  6. Question 6

    Respiration: which statement is NOT true?

    • A. Plants respire as well as photosynthesise.
    • B. Respiration happens in every living cell.
    • C. Respiration produces energy from nothing.
    • D. Mitochondria are where aerobic respiration happens.

  7. Question 7

    Complete the word equation for aerobic respiration: glucose + oxygen → carbon dioxide + ___

    • A. lactic acid
    • B. oxygen
    • C. water
    • D. nitrogen

  8. Question 8

    Respiration: which statement is NOT true?

    • A. Respiration happens in every living cell.
    • B. Mitochondria are where aerobic respiration happens.
    • C. Respiration means breathing.
    • D. Plants respire as well as photosynthesise.

  9. Question 9

    Where does gas exchange happen in the lungs?

    • A. in the trachea
    • B. in the alveoli (air sacs)
    • C. in the ribs
    • D. in the diaphragm

  10. Question 10

    Respiration: which statement is NOT true?

    • A. Aerobic respiration releases more energy than anaerobic respiration.
    • B. Respiration means breathing.
    • C. Plants respire as well as photosynthesise.
    • D. Mitochondria are where aerobic respiration happens.

  11. Question 11

    During hard exercise, muscles may respire without enough oxygen. What do they make?

    • A. alcohol and carbon dioxide
    • B. starch
    • C. lactic acid
    • D. oxygen

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Answer key: Breathing, gas exchange and respiration

  1. 1. A. in the alveoli (air sacs)

  2. 2. B. Respiration means breathing.

  3. 3. B. ethanol (alcohol) and carbon dioxide

  4. 4. C. We breathe out only carbon dioxide.

  5. 5. C. water

  6. 6. C. Respiration produces energy from nothing.

  7. 7. C. water

  8. 8. C. Respiration means breathing.

  9. 9. B. in the alveoli (air sacs)

  10. 10. B. Respiration means breathing.

  11. 11. C. lactic acid