EDUCIFLY BLOG
IGCSE Biology Revision Notes (0610): The Complete Topic-by-Topic Guide
Good IGCSE Biology revision notes turn a fat syllabus into something your child can actually hold in their head. Cambridge IGCSE Biology 0610 has 21 topics, three papers, and hundreds of tiny facts to learn. That is a lot. The trick is not reading more. The trick is making short, clear notes for each topic, then testing yourself on them again and again.
This guide walks you through every part of the course. You will see what each of the 21 topics covers, how the exam is built, and how to make revision notes that stick. We wrote it for parents who want to help and students who want a plan.
Quick answer: IGCSE Biology revision notes are short, organised summaries of the Cambridge 0610 (or 0970 for 9–1) syllabus, built topic by topic. The course has 21 topics grouped into cells, plants, humans, genetics, and ecology. The best notes are one page per topic, use key terms and simple diagrams, and are made by the student, not just read. Pair your notes with past papers and you cover both what to know and how to answer.
What are IGCSE Biology revision notes?
IGCSE Biology revision notes are short written summaries of each topic in the 0610 syllabus, made to help you remember and recall facts fast.
They are not a copy of the textbook. A textbook explains everything in full. Good notes strip that down to the parts you need for the exam. Think key definitions, labelled diagrams, and the exact command words Cambridge uses.
The best notes do three jobs. They cut a big topic down to one page. They put facts in an order that makes sense. And they leave gaps you can test yourself on later. If your notes are just neat copies of the book, they look nice but do little. If they force you to recall, they work.
Cambridge IGCSE Biology comes in two codes with the same content. Code 0610 is graded A*–G. Code 0970 is the "9–1" version, graded 9 to 1. Both use the same syllabus, the same papers, and the same mark schemes. So one set of notes works for both. If you want the full picture of the qualification, our guide on what IGCSE is explains how the whole system fits together.
What topics are in the IGCSE Biology 0610 syllabus?
The Cambridge IGCSE Biology 0610 syllabus for 2026–2028 has 21 topics, covering cells, plants, the human body, genetics, and the environment.
Here is the full list, in Cambridge's own order. Make one page of notes for each. That gives you 21 clean pages instead of one scary textbook.
# | Topic | What it covers (in plain words) |
|---|---|---|
1 | Characteristics and classification of living organisms | The 7 signs of life; how we sort living things into groups |
2 | Organisation of the organism | Cells, tissues, organs; animal and plant cell parts |
3 | Movement into and out of cells | Diffusion, osmosis, active transport |
4 | Biological molecules | Carbohydrates, proteins, fats; food tests |
5 | Enzymes | How enzymes work; effect of heat and pH |
6 | Plant nutrition | Photosynthesis; the leaf |
7 | Human nutrition | Diet, teeth, the gut, digestion |
8 | Transport in plants | Xylem, phloem, water loss |
9 | Transport in animals | The heart, blood, blood vessels |
10 | Diseases and immunity | Pathogens; how the body fights them |
11 | Gas exchange in humans | The lungs; breathing |
12 | Respiration | Aerobic and anaerobic respiration |
13 | Excretion in humans | The kidney; removing waste |
14 | Coordination and response | Nerves, hormones, the eye |
15 | Drugs | Medical and misused drugs |
16 | Reproduction | Plant and human reproduction |
17 | Inheritance | DNA, genes, genetic diagrams |
18 | Variation and selection | Natural selection; adaptation |
19 | Organisms and their environment | Food chains, energy flow, cycles |
20 | Human influences on ecosystems | Pollution, deforestation, conservation |
21 | Biotechnology and genetic modification | Using microbes; changing genes |
The list looks long, but many topics link together. Cells (topic 2) feed into transport (3), which feeds into nutrition and gas exchange. When you revise, notice these links. They help facts stick, and Cambridge loves questions that cross topics.
How is IGCSE Biology assessed?
IGCSE Biology 0610 is assessed through three papers: a multiple-choice paper, a theory paper, and a practical paper. Together they make up your final grade.
Every student sits one paper from each of the three groups. Which papers you sit depends on your tier. There are two tiers: Core and Extended. We explain those in the next section. Here is the paper structure.
Paper | Type | Time | Marks | Weight |
|---|---|---|---|---|
Paper 1 | Multiple Choice (Core) | 45 min | 40 | 30% |
Paper 2 | Multiple Choice (Extended) | 45 min | 40 | 30% |
Paper 3 | Theory (Core) | 1 hr 15 min | 80 | 50% |
Paper 4 | Theory (Extended) | 1 hr 15 min | 80 | 50% |
Paper 5 | Practical Test | 1 hr 15 min | 40 | 20% |
Paper 6 | Alternative to Practical | 1 hr | 40 | 20% |
A Core student sits Paper 1, Paper 3, and either Paper 5 or Paper 6. An Extended student sits Paper 2, Paper 4, and either Paper 5 or Paper 6. So everyone takes three papers.
Two-thirds of your marks reward knowing and understanding biology. The other third rewards handling data and solving problems — reading graphs, planning experiments, and explaining results. Cambridge splits this as roughly 63% for knowledge and understanding and 37% for handling information and problem solving. That is why revision notes alone are never enough. You also need to practise applying what you know, which is where past papers earn their keep.
One more thing about the papers. The multiple-choice paper feels easy but punishes careless reading. The theory paper rewards precise words and neat diagrams. The practical paper tests whether you can plan a fair test and read results. Your notes should prepare you for all three, not just the theory. So add a small "how it's tested" line to each topic page — a quick reminder of where that topic tends to show up.
What is the difference between Core and Extended Biology?
Core and Extended are two versions of the same course. Core covers less content and caps at grade C, while Extended covers everything and can reach A* (or grade 9).
Think of Extended as Core plus extra. Extended students learn the Core material and then some harder ideas on top. In the syllabus, this extra content is marked as "Supplement".
Here is the plain difference.
Core | Extended | |
|---|---|---|
Papers | 1, 3, and (5 or 6) | 2, 4, and (5 or 6) |
Content | Core only | Core + Supplement |
Grades available | C to G | A* (or 9) to G |
Best for | Students aiming at C or below | Students aiming above C |
Most students who want top grades sit Extended. Your teacher usually decides your tier based on your progress. If you are not sure which tier your child is on, ask the school — it changes which past papers to practise. To see how these grades map to boundaries, our guide on IGCSE grade boundaries shows how many marks each grade needs.
How to make IGCSE Biology revision notes that actually work
Make one page of notes per topic, in your own words, using key terms and simple diagrams. Then use those notes to test yourself, not just to read.
Reading notes feels like studying. It rarely is. Your brain remembers what it works to recall, not what your eyes slide over. So build your notes to force recall. Here is a method that works for the 0610 course.
Step 1: One topic, one page
Give each of the 21 topics a single page. A page limit forces you to choose what matters. If it does not fit, it is probably detail you can drop. This also makes revision feel finished — 21 pages is a countable goal.
Step 2: Lead with the key words
Cambridge exams are strict about terms. "Diffusion" is not the same as "osmosis". "Respiration" is not "breathing". Start each page with a short list of the topic's key words and exact definitions. Learn these first. Many marks are lost simply by using the wrong word.
Step 3: Draw the diagrams by hand
Biology is full of diagrams — the heart, the leaf, the kidney, the eye. Draw them yourself, label them, and cover the labels to test yourself. Do not just print them. The act of drawing builds memory that printing never will.
Step 4: Leave gaps to test yourself
Turn facts into questions. Instead of writing "the mitochondria carry out aerobic respiration", write "Where does aerobic respiration happen?" on one side and the answer on the other. Flashcards do this well. So does folding a page and hiding one column.
Step 5: Colour-code the links
Use one colour to mark where a topic connects to another. Transport links to gas exchange. Enzymes link to digestion and respiration. These links are where the harder Extended questions live.
A quick way to build strong notes fast is to work with a specialist who knows the 0610 mark scheme. Educifly's IGCSE Biology tutors help students turn messy class notes into clean, exam-ready summaries, one topic at a time.
Which IGCSE Biology topics are hardest — and how notes help
The topics students find hardest are usually enzymes, osmosis and water potential, genetics, and coordination and response. Clear notes with worked examples make these far easier.
Examiner reports point to the same weak spots year after year. Cells seen down a microscope. Osmosis experiments. Enzyme conditions. The difference between absorption and assimilation. These are not random — they are the topics where students mix up close ideas.
Notes fix this in a specific way. For each hard topic, write a small "easy to confuse" box. Put the two ideas side by side with one clear difference each. For example: diffusion moves any particle from high to low concentration, while osmosis moves only water across a partly permeable membrane. Seeing them together stops the mix-up.
Another reason these topics feel hard is that they mix words with numbers. Enzyme questions ask you to read a rate graph. Genetics asks you to work out ratios. Osmosis asks you to compare masses before and after. Pure fact-learning does not cover this. Your notes should include one worked example per number-heavy topic — a graph you have read, a cross you have solved, a result you have explained. That turns a "hard" topic into a familiar one.
Here are the topics worth extra note-making time.
Topic | Why it trips students up | Note tip |
|---|---|---|
Enzymes | Confusing "denatured" with "killed" | Draw the lock-and-key model; list what changes rate |
Movement in and out of cells | Diffusion vs osmosis vs active transport | One comparison table with three columns |
Inheritance | Genetic diagrams and ratios | Practise 3 Punnett squares from memory |
Coordination and response | Nerves vs hormones | Table: speed, path, how long the effect lasts |
Respiration | Aerobic vs anaerobic word equations | Write both equations until automatic |
How much time do you need to revise IGCSE Biology?
Most students need six to eight weeks of steady revision for IGCSE Biology, spread across all 21 topics, to feel exam-ready.
That works out to roughly two or three topics a week if you start early. Cramming 21 topics into a final week does not work — there is simply too much to hold. Early and steady beats late and heavy every time.
A simple plan looks like this. Spend the first block making notes, one topic at a time. Spend the middle block testing yourself on those notes. Spend the final block doing past papers under timed conditions. Notes come first, but past papers must come before the exam. They teach you how questions are worded and how marks are given.
If your child studies more than one science, the same method carries over. IGCSE Chemistry and Physics use the same paper structure and reward the same habits, so notes built for Biology set the pattern for all three. Educifly's IGCSE Chemistry tutors use the same topic-by-topic approach to help students revise smarter, not longer.
Do IGCSE Biology 0610 and 0970 use the same notes?
Yes. IGCSE Biology 0610 and 0970 share the exact same syllabus content, papers, and mark schemes, so one set of revision notes covers both.
The only real difference is the grade scale. Code 0610 reports grades as A* down to G. Code 0970 reports the same performance as 9 down to 1. Your school picks which code to enter you under, often based on your country. The biology you learn is identical.
So do not worry about finding "0970 notes" versus "0610 notes". Any solid set of Cambridge IGCSE Biology notes works for both. Just check the notes match the current 2026–2028 syllabus, since Cambridge updates content every few years. To see where Biology sits among the other subjects on offer, browse our full list of IGCSE subjects.
Turning revision notes into exam marks
Notes get you the knowledge. Past papers turn that knowledge into marks. You need both, in that order.
Once your notes are made and tested, move to past papers. Do them with the mark scheme beside you. When you lose a mark, write down why. Was it a missing key word? A misread graph? A rushed diagram? Patterns show up fast, and fixing them is where grades jump.
Book a free trial class if you want a specialist to look at your child's notes and past-paper answers together. A good tutor spots the exact gap between what a student knows and what the mark scheme wants — and that gap is usually smaller than it feels.
Frequently asked questions
What are the best IGCSE Biology revision notes?
The best IGCSE Biology revision notes are the ones you make yourself, organised one page per topic across all 21 topics of the 0610 syllabus. Self-made notes force you to process the material, which builds memory. Printed notes from a website are a fine backup, but they should support your own notes, not replace them. Whatever you use, make sure they match the current 2026–2028 Cambridge syllabus.
How many topics are in IGCSE Biology?
Cambridge IGCSE Biology 0610 has 21 topics. They run from characteristics of living organisms (topic 1) through to biotechnology and genetic modification (topic 21), covering cells, plants, the human body, genetics, and ecology. Making one page of notes per topic gives you a complete, countable revision set.
Is IGCSE Biology hard?
IGCSE Biology is not conceptually hard, but it has a lot of content and strict marking. The challenge is the volume of facts and Cambridge's demand for exact terms, not difficult reasoning. Students who make clear notes early and practise past papers usually find it very manageable. The topics students struggle with most are enzymes, osmosis, and genetics.
What is the difference between Core and Extended IGCSE Biology?
Core covers less content and can reach a maximum of grade C, while Extended covers all the content and can reach A* (or grade 9). Core students sit Papers 1, 3, and a practical; Extended students sit Papers 2, 4, and a practical. Extended includes everything in Core plus extra "Supplement" material. Most students aiming for top grades take Extended.
How is IGCSE Biology graded?
IGCSE Biology is graded A* to G under code 0610, or 9 to 1 under code 0970. Both codes use identical papers and mark schemes — only the grade labels differ. Your final grade comes from three papers: a multiple-choice paper (30%), a theory paper (50%), and a practical paper (20%).
How long should IGCSE Biology revision notes be?
Aim for about one page per topic, giving you roughly 21 pages for the whole course. A page limit forces you to keep only what matters — key definitions, labelled diagrams, and easy-to-confuse comparisons. If your notes run to many pages per topic, they have become a copy of the textbook rather than a revision tool.
Do I need to memorise diagrams for IGCSE Biology?
Yes. IGCSE Biology asks you to label and sometimes draw key diagrams, such as the heart, the leaf, the kidney, the nephron, and the eye. The best way to learn them is to draw each one by hand, label it, then cover the labels and test yourself. Recognising a printed diagram is not the same as being able to reproduce it in an exam.
What is the difference between Paper 5 and Paper 6 in IGCSE Biology?
Paper 5 is a practical exam done in a lab, where you carry out real experiments. Paper 6 is the "Alternative to Practical", a written paper about experiments that you answer without a lab. Both are worth 20% of the final grade. Your school decides which one you sit, usually based on whether it has lab facilities for the exam.
When should my child start revising for IGCSE Biology?
Start six to eight weeks before the exams for steady, low-stress revision. That allows about two or three topics a week, with time left for past papers at the end. Starting earlier is even better for students who find biology's volume of content overwhelming. Leaving all 21 topics to the final week rarely works.
Can a tutor help with IGCSE Biology revision?
Yes. A specialist IGCSE Biology tutor can help a student turn class notes into clean, exam-ready summaries, target the topics they find hardest, and practise past papers against the real mark scheme. This is often faster than revising alone because the tutor knows exactly what Cambridge rewards. Educifly matches each student with a subject specialist and keeps the same tutor every week.
Are IGCSE Biology notes the same every year?
Mostly, but not entirely. Cambridge reviews the 0610 syllabus every few years, and the current version runs for 2026–2028. Core biology — cells, transport, genetics — stays stable, but details and emphasis can shift between syllabus cycles. Always check your notes match the syllabus version for your exam year before relying on them.