specification overview
Edexcel GCSE Biology (1BI0) is a separate-science qualification covering 9 topics from key concepts in biology through to ecosystems. It's tiered (Foundation grades 5-1 or Higher grades 9-4), linear (both papers sat at the end of year 11), and graded 9-1, with 8 core practicals examined across both papers.
subject content
1. Key concepts in biology
Papers 1, 2- Cells and microscopy
- Enzymes and transport into cells
2. Cells and control
Paper 1- Mitosis, cancer and growth
- The nervous system, stem cells and growth
3. Genetics
Paper 1- Reproduction, DNA and inheritance
- Variation and genetic engineering
4. Natural selection and genetic modification
Paper 1- Evolution and classification
- GMO and selective breeding
5. Health, disease and the development of medicines
Paper 1- Health and disease; the human body's defences
- Plant defences and pathogens
6. Plant structures and their functions
Paper 2- Photosynthesis and factors affecting rate
- Plant structure and transport
7. Animal coordination, control and homeostasis
Paper 2- Hormones and reproduction
- Homeostasis: control of blood glucose, temperature, water
8. Exchange and transport in animals
Paper 2- Gas exchange and the respiratory system
- Circulatory system and the heart
9. Ecosystems and material cycles
Paper 2- Ecosystems, food chains and biodiversity
- Water cycle, carbon cycle, nitrogen cycle
assessment structure
| Paper | What's assessed | Length | Marks | Weight | Question types |
|---|---|---|---|---|---|
| Paper 1 | Topics 1-5 (key concepts, cells and control, genetics, evolution, health) | 1h 45m | 100 | 50% | Multiple-choice, short answer, calculations and extended writing |
| Paper 2 | Topics 1, 6-9 (key concepts, plants, animal coordination, exchange, ecosystems) | 1h 45m | 100 | 50% | Multiple-choice, short answer, calculations and extended writing |
Topic 1 (key concepts) appears on both papers. Foundation-tier papers are graded 5-1; Higher-tier papers are graded 9-4 (with an allowed grade 3 for students who narrowly miss grade 4).
assessment objectives
| AO | What it means | Overall |
|---|---|---|
| AO1 | Demonstrate knowledge and understanding of scientific ideas, techniques and procedures. | 40% |
| AO2 | Apply knowledge and understanding of scientific ideas, techniques and procedures. | 40% |
| AO3 | Analyse information and ideas to interpret and evaluate, make judgements and draw conclusions, including for experimental procedures. | 20% |
required practicals
| Practical | What it involves |
|---|---|
| CP1 Microscopy | Investigate cell structure using a microscope. |
| CP2 Enzyme activity | Investigate the effect of pH on enzyme activity. |
| CP3 Food tests | Investigate the composition of foods. |
| CP4 Osmosis | Investigate osmosis using plant tissue. |
| CP5 Antiseptics, antibiotics or plant extracts on microbial cultures | Investigate the effects of antiseptics, antibiotics or plant extracts on microbial cultures (spec ref 5.18B). |
| CP6 Light intensity and photosynthesis | Investigate the effect of light intensity on the rate of photosynthesis (spec ref 6.5). |
| CP7 Rate of respiration | Investigate the rate of respiration in living organisms (spec ref 8.11). |
| CP8 Field-work: quadrats and belt transects | Investigate the relationship between organisms and their environment using field-work techniques, including quadrats and belt transects (spec ref 9.5). |
higher vs foundation
| Aspect | Foundation tier | Higher tier |
|---|---|---|
| Grades available | Grades 5 to 1 | Grades 9 to 4, plus an allowed grade 3 for students who narrowly miss grade 4 |
| Paper count and length | 2 papers, 1h 45m each, 100 marks each | 2 papers, 1h 45m each, 100 marks each |
| Content scope | Full spec, minus the higher-only sections | Full spec including higher-only content |
key tips for success
Master the 8 core practicals
Practical-context questions appear on both papers. Learn method, apparatus and expected results for each of the 8 core practicals.
Learn topic 1 well
Topic 1 (key concepts) appears on both papers, extra investment here pays off across the qualification.
Build maths fluency
10% of marks target maths, magnification, standard form, ratios, percentages. Practise these until automatic.
Practise extended writing
Both papers include 6-mark extended writing questions. Structure with clear scientific reasoning, correct terminology and applied examples.
Choose the right tier
Foundation caps at grade 5; Higher starts at grade 4. If you're consistently scoring around 60%+ on Higher past papers, stick with Higher. If you're scoring below 50%, discuss with your teacher.
Use past papers strategically
Edexcel GCSE Biology has years of past papers. Do timed practice through year 11 to build stamina and identify weak topics.
Where to next
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