Anaerobic Respiration (Cambridge O Level Biology)

Exam Questions

40 mins11 questions
1
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Which row in the table below shows the correct products produced by anaerobic respiration in yeast and in animals?

 

animals

yeast

lactic acid

carbon dioxide

lactic acid

carbon dioxide

A X ✓ X X
B ✓ X X ✓
C X ✓ ✓ X
D ✓ ✓ ✓ X

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    2
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    During vigorous exercise, such as cycling uphill, lactic acid builds up in the muscles.

    How is this lactic acid removed during recovery?

    • excretion of lactic acid by the kidneys

    • anaerobic respiration of lactic acid in the muscles

    • aerobic respiration of lactic acid in the liver

    • excretion of lactic acid by the lungs

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    3
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    Why does anaerobic respiration of glucose release less energy in muscle cells than aerobic respiration?

    1. Energy is lost in oxygen.
    2. Energy remains trapped in the chemical bonds in the molecule lactic acid.
    3. Energy remains trapped in the chemical bonds in the molecule ethanol.
    4. Energy is lost in carbon dioxide.
    • 1, 2 and 4

    • 2 only

    • 2 and 3

    • 4 only

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    4
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    The diagram below shows an experiment set up by a group of students to investigate respiration in yeast.

    12--image-3-yeast-experimen

    Which row of the table below correctly describes the contents of the flask after 20 hours?

      new compound gas produced
    A ethanol (alcohol) oxygen
    B ethanol (alcohol) carbon dioxide
    C lactic acid oxygen
    D lactic acid carbon dioxide

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      5
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      The diagram below shows an experiment set up by a teacher to demonstrate how an investigation into anaerobic respiration in yeast cells can be carried out.

      12--image-4-yeast-experiment

      Predict what would happen to the coloured liquid in the glass tube. 

      • Doesn’t move

      • Moves to the left

      • Moves rapidly to the right

      • Moves slowly to the right

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      1
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      The list below shows four metabolic processes that can occur in living cells.

      1. carbon dioxide + water →  glucose + oxygen
      2. glucose → lactic acid
      3. glucose + oxygen →  carbon dioxide + water
      4. glucose →  alcohol + carbon dioxide

      Which row of the table correctly represents the processes that can occur in muscle cells and yeast cells.

        in muscles in yeast
      A 3 only 1 & 4
      B 3 & 4 2 & 3
      C 2 only 1, 3 & 4
      D 2 & 3 3 & 4

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