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    PracticeAQA GCSEAQA GCSE Biology Foundation Tier Paper 1Question 03.2
    Easy1 markMultiple Choice
    BioenergeticsFoundationPhotosynthesisData Interpretation

    AQA GCSE · Question 03.2 · Bioenergetics

    Table 2Percentage (%)concentration ofcarbon dioxide in the airRate of photosynthesisin arbitrary units0.0000.0250.04160.06190.08200.10200.1220

    Which range of carbon dioxide concentrations caused the rate of photosynthesis to change the most?

    Answer options:

    A.

    From 0.00% to 0.02%

    B.

    From 0.02% to 0.04%

    C.

    From 0.04% to 0.06%

    D.

    From 0.06% to 0.08%

    How to approach this question

    For each option, calculate the difference in the "Rate of photosynthesis" from the table. 1. **0.00% to 0.02%:** Change = 5 - 0 = 5 2. **0.02% to 0.04%:** Change = 16 - 5 = 11 3. **0.04% to 0.06%:** Change = 19 - 16 = 3 4. **0.06% to 0.08%:** Change = 20 - 19 = 1 Compare these changes to find the largest one.

    Full Answer

    B.From 0.02% to 0.04%✓ Correct
    From 0.02% to 0.04%
    To find the range with the greatest change, we need to calculate the difference in the rate of photosynthesis for each interval: - **From 0.00% to 0.02%:** The rate changes from 0 to 5. The change is 5 - 0 = 5 units. - **From 0.02% to 0.04%:** The rate changes from 5 to 16. The change is 16 - 5 = 11 units. - **From 0.04% to 0.06%:** The rate changes from 16 to 19. The change is 19 - 16 = 3 units. - **From 0.06% to 0.08%:** The rate changes from 19 to 20. The change is 20 - 19 = 1 unit. The largest change is 11 units, which occurred in the range from 0.02% to 0.04% carbon dioxide concentration.

    Common mistakes

    ✗ Making a calculation error.\n✗ Just looking at the highest rate (20) instead of the biggest change between two points.
    Question 03.1All questionsQuestion 03.3

    Practice the full AQA GCSE Biology Foundation Tier Paper 1

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