WJEC GCSE Biology 3400/1F Paper 1 Written: Cells, Organ Systems and Ecosystems (Foundation) - Summer 2025
3400/1F 路 Foundation 路 Mark scheme, Question paper
WJEC
GCSE
Biology
WJEC GCSE Biology past papers
This collection keeps WJEC Biology papers together so you can revise the right exam-board style and jump to related revision modules when they are available.
馃搫 52 papers
2017-2025
How the exam works
Skip to the papersWJEC GCSE in Biology (Wales) (3400QS) is assessed in 3 parts. There are Foundation and Higher tiers, and your school enters you for one of them.
Unit 1: Cells, Organ Systems and Ecosystems
- Time
- 1 h 45 min
- Marks
- 80
- Weighting
- 45%
- Format
- Written exam (tiered F/H)
Unit 2: Variation, Homeostasis and Micro-organisms
- Time
- 1 h 45 min
- Marks
- 80
- Weighting
- 45%
- Format
- Written exam (tiered F/H)
Unit 3: Practical Assessment
- Marks
- 30
- Weighting
- 10%
- Format
- Practical assessment (centre-conducted, WJEC-marked, untiered)
Taken from the published specification. Read the specification. Your school confirms which papers and tier you are entered for.
2025 Summer
WJEC GCSE Biology 3400/1H Paper 1 Written: Cells, Organ Systems and Ecosystems (Higher) - Summer 2025
3400/1H 路 Higher 路 Mark scheme, Question paper
WJEC GCSE Biology 3400/2F Paper 2 Written: Variation, Homeostasis and Micro-organisms (Foundation) - Summer 2025
3400/2F 路 Foundation 路 Mark scheme, Question paper
WJEC GCSE Biology 3400/2H Paper 2 Written: Variation, Homeostasis and Micro-organisms (Higher) - Summer 2025
3400/2H 路 Higher 路 Mark scheme, Question paper
WJEC GCSE Biology 3400/3A Paper 3 Practical: Practical Assessment - Summer 2025
3400/3A 路 Insert
WJEC GCSE Biology 3400/3B Paper 3 Practical: Practical Assessment - Summer 2025
3400/3B 路 Insert
WJEC GCSE Biology 3400/3C Paper 3 Practical: Practical Assessment - Summer 2025
3400/3C 路 Insert
WJEC GCSE Biology 3400/3D Paper 3 Practical: Practical Assessment - Summer 2025
3400/3D 路 Insert
WJEC GCSE Biology 3400/3E Paper 3 Practical: Practical Assessment - Summer 2025
3400/3E 路 Insert
WJEC GCSE Biology 3400/3F Paper 3 Practical: Practical Assessment - Summer 2025
3400/3F 路 Insert
2024 Summer
WJEC GCSE Biology 3400/1F Paper 1 Written: Cells, Organ Systems and Ecosystems (Foundation) - Summer 2024
3400/1F 路 Foundation 路 Mark scheme, Question paper
WJEC GCSE Biology 3400/1H Paper 1 Written: Cells, Organ Systems and Ecosystems (Higher) - Summer 2024
3400/1H 路 Higher 路 Question paper
WJEC GCSE Biology 3400/2F Paper 2 Written: Variation, Homeostasis and Micro-organisms (Foundation) - Summer 2024
3400/2F 路 Foundation 路 Mark scheme, Question paper
WJEC GCSE Biology 3400/2H Paper 2 Written: Variation, Homeostasis and Micro-organisms (Higher) - Summer 2024
3400/2H 路 Higher 路 Question paper
WJEC GCSE Biology 3400/3 Paper 3 Practical: Practical Assessment - Summer 2024
3400/3 路 Mark scheme
WJEC GCSE Biology 3400/3A Paper 3 Practical: Practical Assessment - Summer 2024
3400/3A 路 Insert
WJEC GCSE Biology 3400/3B Paper 3 Practical: Practical Assessment - Summer 2024
3400/3B 路 Insert
WJEC GCSE Biology 3400/3C Paper 3 Practical: Practical Assessment - Summer 2024
3400/3C 路 Insert
WJEC GCSE Biology 3400/3D Paper 3 Practical: Practical Assessment - Summer 2024
3400/3D 路 Insert
WJEC GCSE Biology 3400/3E Paper 3 Practical: Practical Assessment - Summer 2024
3400/3E 路 Insert
WJEC GCSE Biology 3400/3F Paper 3 Practical: Practical Assessment - Summer 2024
3400/3F 路 Insert
2023 Summer
WJEC GCSE Biology 3400/1 Paper 1 Written: Cells, Organ Systems and Ecosystems - Summer 2023
3400/1 路 Mark scheme
WJEC GCSE Biology 3400/1F Paper 1 Written: Cells, Organ Systems and Ecosystems (Foundation) - Summer 2023
3400/1F 路 Foundation 路 Question paper
WJEC GCSE Biology 3400/1H Paper 1 Written: Cells, Organ Systems and Ecosystems (Higher) - Summer 2023
3400/1H 路 Higher 路 Question paper
WJEC GCSE Biology 3400/2 Paper 2 Written: Variation, Homeostasis and Micro-organisms - Summer 2023
3400/2 路 Mark scheme
WJEC GCSE Biology 3400/2F Paper 2 Written: Variation, Homeostasis and Micro-organisms (Foundation) - Summer 2023
3400/2F 路 Foundation 路 Question paper
WJEC GCSE Biology 3400/2H Paper 2 Written: Variation, Homeostasis and Micro-organisms (Higher) - Summer 2023
3400/2H 路 Higher 路 Question paper
2022 Summer
WJEC GCSE Biology 3400/1 Paper 1 Written: Cells, Organ Systems and Ecosystems - Summer 2022
3400/1 路 Mark scheme
WJEC GCSE Biology 3400/1F Paper 1 Written: Cells, Organ Systems and Ecosystems (Foundation) - Summer 2022
3400/1F 路 Foundation 路 Question paper
WJEC GCSE Biology 3400/1H Paper 1 Written: Cells, Organ Systems and Ecosystems (Higher) - Summer 2022
3400/1H 路 Higher 路 Question paper
WJEC GCSE Biology 3400/2 Paper 2 Written: Variation, Homeostasis and Micro-organisms - Summer 2022
3400/2 路 Mark scheme
WJEC GCSE Biology 3400/2F Paper 2 (Foundation) - Summer 2022
3400/2F 路 Foundation 路 Question paper
WJEC GCSE Biology 3400/2H Paper 2 (Higher) - Summer 2022
3400/2H 路 Higher 路 Question paper
2019 Summer
WJEC GCSE Biology 3400/1F Paper 1 Written: Cells, Organ Systems and Ecosystems (Foundation) - Summer 2019
3400/1F 路 Foundation 路 Question paper
WJEC GCSE Biology 3400/1H Paper 1 Written: Cells, Organ Systems and Ecosystems (Higher) - Summer 2019
3400/1H 路 Higher 路 Question paper
WJEC GCSE Biology 3400/2F Paper 2 Written: Variation, Homeostasis and Micro-organisms (Foundation) - Summer 2019
3400/2F 路 Foundation 路 Question paper
WJEC GCSE Biology 3400/2H Paper 2 Written: Variation, Homeostasis and Micro-organisms (Higher) - Summer 2019
3400/2H 路 Higher 路 Question paper
2018 Summer
WJEC GCSE Biology 3400/1 Paper 1 Written: Cells, Organ Systems and Ecosystems - Summer 2018
3400/1 路 Mark scheme
WJEC GCSE Biology 3400/1F Paper 1 Written: Cells, Organ Systems and Ecosystems (Foundation) - Summer 2018
3400/1F 路 Foundation 路 Question paper
WJEC GCSE Biology 3400/1H Paper 1 Written: Cells, Organ Systems and Ecosystems (Higher) - Summer 2018
3400/1H 路 Higher 路 Question paper
WJEC GCSE Biology 3400/2 Paper 2 Written: Variation, Homeostasis and Micro-organisms - Summer 2018
3400/2 路 Mark scheme
WJEC GCSE Biology 3400/2F Paper 2 Written: Variation, Homeostasis and Micro-organisms (Foundation) - Summer 2018
3400/2F 路 Foundation 路 Question paper
WJEC GCSE Biology 3400/2H Paper 2 Written: Variation, Homeostasis and Micro-organisms (Higher) - Summer 2018
3400/2H 路 Higher 路 Question paper
2017 Summer
WJEC GCSE Biology 3400/1 Paper 1 Written: Cells, Organ Systems and Ecosystems - Summer 2017
3400/1 路 Mark scheme
WJEC GCSE Biology 3400/1F Paper 1 Written: Cells, Organ Systems and Ecosystems (Foundation) - Summer 2017
3400/1F 路 Foundation 路 Question paper
WJEC GCSE Biology 3400/1H Paper 1 Written: Cells, Organ Systems and Ecosystems (Higher) - Summer 2017
3400/1H 路 Higher 路 Question paper
How to use these papers
Before you start. Work it with the formula sheet you will actually get in the exam, and nothing else. Finding out which formulas you have to remember is half the point of the exercise.
While you work. Write every line of working, even the ones you could do in your head. Method marks are awarded for the working, and a bare answer that is wrong scores nothing.
Marking it afterwards. Mark schemes here award marks per step, so tick your own working line by line rather than judging the final answer. Most lost marks turn out to be a missing unit or an unrounded value.
Warm up first. Cells and Organ Systems is the shortest activity here, so it is the quickest way back into Biology before you open a paper.
Revise this subject
Cells and Organ Systems
Cells and organ systems (Unit 1)
Ecosystems and Biodiversity
Ecosystems and biodiversity (Unit 1)
Homeostasis and Response
Homeostasis and response (Unit 2)
Micro-organisms, Disease and Biotechnology
Micro-organisms, disease and biotechnology (Unit 2)
Variation, Inheritance and Evolution
Variation, inheritance and evolution (Unit 2)
Same subject and level, other exam boards
Schools enter the same subject with different boards, and the papers are not interchangeable. Check the code on your own paper before you revise from these.
Common questions
Are these WJEC GCSE Biology past papers free?
Yes. DoRevision links to official exam-board documents and keeps the revision page free to browse.
Can I use these for Year 10 and Year 11 mocks?
Yes. Past papers are useful for GCSE mocks, timed practice and checking answers against the mark scheme.