Free IGCSE Biology Study Tools
Small tools our tutors wish every student used. Free, no sign-up, and your checklist progress is saved in your browser.
1 · Interactive 0610 Syllabus Checklist
Tick what you could explain without notes. (S) = Supplement (Extended only). Progress saves automatically on this device.
Prefer paper? Printable version here.
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 Calculator
How many hours per week do you actually need? Honest maths, no scare tactics.
3 · 0610 Topic-Difficulty Explorer
Our team's ranking of how hard each topic is to score in (not to understand), based on where students typically lose marks. 1 = banker marks, 5 = mark-killer.
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 →Free tools: common questions
What are the hardest IGCSE Biology 0610 topics to score in?
Based on where students most often lose marks, the hardest to score in are Coordination & response (homeostasis, reflex arc and the eye), then Movement in & out of cells (osmosis wording), Enzymes (graph explanations), Plant nutrition, Diseases & immunity, Excretion and Inheritance. These reward exact mark-scheme phrasing rather than recall.
Are these free IGCSE Biology tools really free?
Yes. The syllabus checklist, revision-time calculator, topic-difficulty explorer and Gap Report all run in your browser with no sign-up, no login and no card. Your checklist progress is saved on your own device.
How do I find my weak IGCSE Biology topics?
Use the free Gap Report: tick the topics your child is shaky on, and it ranks them by how hard they are to score in and links each one to a free guide. You get a shareable report link at the end.