Exam (elaborations)
AQA AS Biology Question Paper 1 2025 Predicted
AQA AS Biology Question Paper 1 2025 Predicted
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Please write clearly in block capitals.Centre number Candidate number
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I declare this is my own work.
AS
BIOLOGY
Paper 1
Time allowed: 1 hour 30 minutes
Materials For Examiner’s Use
For this paper you must have:
• a ruler with millimetre measurements Question Mark
• a scientific calculator. 1
2
Instructions
• Use black ink or black ball-point pen. 3
• Fill in the boxes at the top of this page. 4
• Answer all questions. 5
• You must answer the questions in the spaces provided. Do not write
6
outside 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 7
this book. Write the question number against your answer(s). 8
• Show all your working.
9
• Do all rough work in this book. Cross through any work you do not want
to be marked. TOTAL
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 75.
SOLE Property of Tyrion's AQA AS Biology Question Paper 1 2025 Predicted
, 2
Answer all questions in the spaces provided.
0 1 The diagram illustrates the mammalian gas exchange system, highlighting the
structures involved in breathing and the processes of gas exchange in the lungs
and alveoli.
0 1 . 1 Identify the structures labeled A and B in the diagram.
Name the structures labelled A and B.
[2 marks]
A
B
0 1 . 2 Explain the role of structure B during the process of inhalation, including
how it causes air to enter the lungs. [2 marks]
AQA AS Biology Question Paper 1 2025 Predicted
, 3
0 1 . 3 Arrows C and D in the alveolus diagram represent the movement of gases. Name the
gases involved and describe the processes occurring at each arrow.
[2 marks]
0 1 . 4 Describe one structural adaptation of the alveoli that increases the surface
area available for gas exchange.
[1 mark]
7
AQA AS Biology Question Paper 1 2025 Predicted
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