1
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
BIOLOGY
Paper 2
Time allowed: 2 hours
Materials
For Examiner’s Use
For this paper you must have:
• a ruler with millimetre measurements Question Mark
• a scientific calculator.
1
Instructions 2
• 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
outside the box around each page or on blank pages. 6
• 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.
• Do all rough work in this book. Cross through any work you do not want 9
to be marked. 10
TOTAL
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 91.
SOLE Property of Tyrion's AQA AL Biology Question Paper 2 2025 Predicted
, 2
Answer all questions in the spaces provided.
0 1 . 1 What structure of the brain is involved in thermoregulation? (1)
The structure involved in thermoregulation may cause sweat glands
to release more sweat.
0 1 . 2
Explain how increased sweating is involved in the regulation of body
temperature. [3 marks]
0 1 . 3 The photograph below shows a California sea lion (Zalophus californianus), a
large marine mammal.
[2 marks]
AQA AL Biology Question Paper 2 2025 Predicted
, 3
Domoic acid is a neurotoxin, produced by algae, that harms the brains of these mammals. This
neurotoxin damages brain cells that release a neurotransmitter called glutamate.
(i) Describe how a neurotransmitter, such as glutamate, is released from a brain cell. (4 marks)
0 1 . 4 (ii) Scientists have used magnetic resonance imaging (MRI) to provide
evidence that domoic acid may damage the brains of California sea lions.
Suggest how MRI can provide this evidence. [2 marks]
10
AQA AL Biology Question Paper 2 2025 Predicted
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
BIOLOGY
Paper 2
Time allowed: 2 hours
Materials
For Examiner’s Use
For this paper you must have:
• a ruler with millimetre measurements Question Mark
• a scientific calculator.
1
Instructions 2
• 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
outside the box around each page or on blank pages. 6
• 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.
• Do all rough work in this book. Cross through any work you do not want 9
to be marked. 10
TOTAL
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 91.
SOLE Property of Tyrion's AQA AL Biology Question Paper 2 2025 Predicted
, 2
Answer all questions in the spaces provided.
0 1 . 1 What structure of the brain is involved in thermoregulation? (1)
The structure involved in thermoregulation may cause sweat glands
to release more sweat.
0 1 . 2
Explain how increased sweating is involved in the regulation of body
temperature. [3 marks]
0 1 . 3 The photograph below shows a California sea lion (Zalophus californianus), a
large marine mammal.
[2 marks]
AQA AL Biology Question Paper 2 2025 Predicted
, 3
Domoic acid is a neurotoxin, produced by algae, that harms the brains of these mammals. This
neurotoxin damages brain cells that release a neurotransmitter called glutamate.
(i) Describe how a neurotransmitter, such as glutamate, is released from a brain cell. (4 marks)
0 1 . 4 (ii) Scientists have used magnetic resonance imaging (MRI) to provide
evidence that domoic acid may damage the brains of California sea lions.
Suggest how MRI can provide this evidence. [2 marks]
10
AQA AL Biology Question Paper 2 2025 Predicted
