Unit 3: Interaction and Interdependence
Topic 3.2: Cell Respiration Questions
Practice 20 exam-style questions for IB Biology Topic 3.2. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.
1State2 marks
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State two cellular processes that are powered by converting ATP into ADP.
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Why is ATP described as the cell's energy currency?
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A student investigates respiration by adding glucose solution to a suspension of yeast cells.
State the function of the glucose in this experiment.
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What single feature distinguishes aerobic respiration from anaerobic respiration?
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State the role of potassium hydroxide (KOH) in a respirometer.
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In which part of a human cell does aerobic respiration take place?
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What does the 'respiration rate' of an organism measure?
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State the product, and the location in the cell, of anaerobic respiration in human muscle cells.
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In which part of an ATP molecule is the readily usable energy stored?
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Why do cells carry out respiration?
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A student measures respiration rate by the oxygen taken up by germinating seeds.
When the seeds are treated with cyanide, an inhibitor of aerobic respiration, the rate falls.
Suggest how the respirometer readings would change after the cyanide treatment, and propose one other quantity the student could measure instead of oxygen.
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An exam asks you to outline how cells generate ATP.
Which answer is complete?
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An insulated flask of germinating seeds is fitted with a thermometer, and the temperature slowly rises over an hour.
Which statement best explains this observation?
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An exam asks for a feature of ATP that suits it to powering a fast cell process.
Which feature is valid?
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• Aimnova practice
Yeast cells were placed in a sealed flask with a sucrose solution and the rate at which they released gas was measured.
Explain why the cells need energy and state the function of the sucrose supplied in this experiment.
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A respirometer experiment also sets up an identical tube containing dead (boiled) seeds.
What is the purpose of this second tube?
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Which of the following is a cellular process powered by converting ATP into ADP?
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How is a molecule of ATP regenerated inside a cell?
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A respirometer holds living seeds together with KOH.
Over ten minutes the coloured liquid in the tube moves towards the seeds.
What does this movement show?
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