Free IGCSE Biology Study Tools
Use these tools to organise the syllabus, estimate a realistic workload and choose what to test next. They support a study decision; they do not replace evidence from marked questions or school assessments.
1. Interactive 0610 syllabus checklist
Tick a statement only when you can explain it without notes. (S) means Supplement content for Extended candidates.
Progress is saved on this device. Prefer paper? Use the printable checklist.
1. Characteristics & classification of living organisms
2. Organisation of the organism
3. Movement into & out of cells
4. Biological molecules
5. Enzymes
6. Plant nutrition
7. Human nutrition
8. Transport in plants
9. Transport in animals
10. Diseases & immunity
11. Gas exchange in humans
12. Respiration
13. Excretion in humans
14. Coordination & response
15. Drugs
16. Reproduction
17. Inheritance
18. Variation & selection
19. Organisms & their environment
20. Human influences on ecosystems
21. Biotechnology & genetic modification
2. Revision-time estimate
Enter the time remaining, number of uncertain topics and target. Treat the result as a planning estimate, then adjust it using real school and practice evidence.
3. Topic answer-difficulty explorer
This teaching estimate reflects how much precision, application or sequencing a topic often requires in written answers. It is not an official Cambridge ranking and may not match an individual student’s experience.
Characteristics & classification
Mostly recall; keys questions are free marks with care.
Read the Characteristics & classification guide →Organisation of the organism
Magnification maths trips students who skip unit conversion.
Read the Organisation of the organism guide →Movement in & out of cells
Osmosis definitions and explanations are the most mark-sensitive wording in the syllabus.
Read the Movement in & out of cells guide →Biological molecules
Food tests are guaranteed marks if you learn colours precisely.
Read the Biological molecules guide →Enzymes
Graph explanation questions demand exact mark-scheme phrasing ("denatured", "active site shape").
Read the Enzymes guide →Plant nutrition
Limiting-factor graphs and practicals are classic discriminators.
Read the Plant nutrition guide →Human nutrition
Lots of content; enzyme/digestion links must be precise.
Read the Human nutrition guide →Transport in plants
Transpiration explanations need cause-and-effect chains, not lists.
Read the Transport in plants guide →Transport in animals
Heart structure is easy; explaining pressure/valve logic is not.
Read the Transport in animals guide →Diseases & immunity
Active vs passive immunity (S) is a perennial 6-mark trap.
Read the Diseases & immunity guide →Gas exchange in humans
Ventilation mechanics (S) need careful sequencing.
Read the Gas exchange in humans guide →Respiration
"Energy is produced" = instant lost mark. Wording is everything.
Read the Respiration guide →Excretion in humans
Nephron detail (S) is heavily tested and easily confused.
Read the Excretion in humans guide →Coordination & response
Homeostasis + reflex arc + eye = the biggest Extended question bank in the syllabus.
Read the Coordination & response guide →Drugs
Short topic; antibiotic-resistance logic is the only trap.
Read the Drugs guide →Reproduction
Menstrual-cycle hormones (S) need graph fluency.
Read the Reproduction guide →Inheritance
Punnett squares are mechanical; pedigree and ratio reasoning is where marks die.
Read the Inheritance guide →Variation & selection
Natural selection answers must follow the full five-step sequence.
Read the Variation & selection guide →Organisms & their environment
Energy-flow calculations and nitrogen cycle (S) reward precision.
Read the Organisms & their environment guide →Human influences on ecosystems
Eutrophication (S) is a sequencing question in disguise.
Read the Human influences on ecosystems guide →Biotechnology & GM
Fermenter conditions are list-learnable marks.
Read the Biotechnology & GM guide →Study-tool questions
What does the topic-difficulty rating mean?
It is a teaching estimate of how demanding a topic can be to answer accurately, especially when questions require precise language, application or several linked steps. It is not an official Cambridge ranking and it does not predict an individual student’s result.
Are the IGCSE Biology tools free?
Yes. The syllabus checklist, revision-time calculator, topic explorer and Gap Report run in the browser with no account or payment. Checklist progress is stored on the device.
How do I find the topics that need attention?
Start with the syllabus checklist or Gap Report, then confirm the result with a few fresh questions. A topic that feels uncertain may still be secure in an exam, while a familiar topic can contain repeated wording or application errors.
Is the revision-time calculator a personalised study prescription?
No. It is a planning estimate based on the information entered. School workload, existing knowledge, study quality and the time needed for each topic vary, so use the result as a starting point and adjust it using real practice evidence.
Use a question to confirm the result
A checklist or self-rating shows where to look. A fresh written question shows whether the topic is secure.
Open the practice question sets →