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Combined science (Foundation)
Aerobic and anaerobic cellular respiration

Starter quiz

  • Match the words to their meanings.
    • Active site
      ⇔
      part of an enzyme to which a specific substrate can bind ✓
    • Enzyme
      ⇔
      biological catalyst ✓
    • Rate
      ⇔
      how much change occurs per unit of time ✓
    • Lock and key
      ⇔
      a model used to explain the specificity of enzymes ✓
  • Which is the best explanation of the term denatured?
    • Bonds in the enzyme break, changing the shape of the enzyme.
    • Bonds in the substrate break, changing the shape of the active site.
    • Bonds in the substrate break, changing the shape of the substrate.
    • Bonds in the enzyme break, changing the shape of the active site.  ✓
  • Some peas are boiled and then cooled back to room temperature. The peas are then used in a respirometer at 30°C. How will the respirometer results for the boiled peas compare to germinating peas?
    Some peas are boiled and then cooled back to room temperature. The peas are then used in a respirometer at 30°C. How will the respirometer results for the boiled peas compare to germinating peas?
    • The boiled peas will have a slower rate of cellular respiration.
    • The boiled peas will have a faster rate of cellular respiration.
    • The boiled and germinating peas will respire at the same rate.
    • The boiled peas will not respire but the germinating peas will respire.  ✓
  • In three 5 minute tests using a respirometer, the water in the capillary tube moves 10 mm, 12 mm and 8 mm. The mean rate of respiration for these results is <span class="blank">______</span> mm/min.
    In three 5 minute tests using a respirometer, the water in the capillary tube moves 10 mm, 12 mm and 8 mm. The mean rate of respiration for these results is ______ mm/min.
    • '2' ✓
  • What is oxygen debt?
    • The amount of oxygen needed for aerobic respiration.
    • The amount of oxygen needed for anaerobic respiration.
    • The amount of oxygen needed to remove lactic acid made by anaerobic respiration.  ✓
    • The amount of oxygen needed to remove CO_2 made by anaerobic respiration.
  • For a working muscle cell, what is the major advantage of aerobic cellular respiration compared to anaerobic cellular respiration?
    • Aerobic cellular respiration transfers more energy per molecule of glucose.  ✓
    • Aerobic cellular respiration is faster.
    • Aerobic cellular respiration uses mitochondria.
    • Aerobic cellular respiration produces carbon dioxide.
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