AQA GCSE COMBINED SCIENCE_ TRIOLOGY BIOLOGY 1H 2025 PREDICTED QUESTION PAPER

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H
AQA GCSE
BIOLOGY 2025 : Triology
Higher Tier Paper 1
Materials
Time allowed: 1 hour 45 minutes
For this paper you must have:
• a ruler
• a scientific calculator
• the periodic table (enclosed). For Examiner’s Use

Instructions Question Mark

• Use black ink or black ball-point pen. 1
• Pencil should only be used for drawing. 2
• Fill in the boxes at the top of this page. 3
• Answer all questions in the spaces provided. Do not write outside
4
the box around each page or on blank pages.
• If you need extra space for your answer(s), use the lined pages at the end of 5
this book. Write the question number against your answer(s). 6
• Do all rough work in this book. Cross through any work you do not want 7
to be marked.
8
• In all calculations, show clearly how you work out your answer.
TOTAL
Information
• The maximum mark for this paper is 100.
• The marks for questions are shown in brackets.
• You are expected to use a calculator where appropriate.
• You are reminded of the need for good English and clear presentation
in your answers.




SOLE Property of Tyrion's AQA1H
AQA Biology Biology 1H 2025Question
2025 Triology Triology Question
Paper Paper

, Do not write
Outside the
Box

0 1 A Write the balanced chemical equation for photosynthesis. Explain why
light is necessary for this process. [2 marks]

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0 1 B The gardener places the pondweed at distances of 10 cm, 20 cm, 30 cm,
and 40 cm from a lamp. Suggest two ways to ensure that the experiment
provides reliable results. [2 marks]
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0 1 C The gardener uses the inverse square law to calculate light intensity:
1
𝐼𝐼 ∝
𝑑𝑑2
Where 𝐼𝐼 is light intensity and 𝑑𝑑 is the distance from the light source.
Calculate how the light intensity changes when the distance is increased
from 10 cm to 20 cm. Show your working clearly. [2 marks]
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0 1 D The gardener observes that fewer bubbles are produced at greater
distances. Explain this observation in terms of limiting factors of
photosynthesis. [2 marks]

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AQA Biology 1H 2025 Triology Question Paper

, Do not write
Outside the
Box

0 1 E Design an improved method to measure the rate of photosynthesis more
accurately than counting bubbles. Your answer should include
equipment, steps, and how to control variables. [4 marks]
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0 1 F Suggest how temperature could affect this experiment and describe one
way to control it during the investigation. [1 marks]
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AQA Biology 1H 2025 Triology Question Paper