Edexcel · GCSE
174 lessons across 9 units
This is the complete topic map for the Edexcel GCSE Biology course — every unit and topic from the specification in one place: 174 lessons across 9 units, from Topic 1 – Key concepts in biology to Topic 9 – Ecosystems and material cycles. Each topic below opens a focused revision lesson, so revision can start from the course as the exam board organises it — not from a guess about what might come up. Lessons marked Higher cover content that only appears on Higher-tier papers; everything unmarked is for all students.
The course is organised into 9 units: Topic 1 – Key concepts in biology (21 lessons), Topic 2 – Cells and control (17 lessons), Topic 3 – Genetics (23 lessons), Topic 4 – Natural selection and genetic modification (14 lessons), Topic 5 – Health, disease and the development of medicines (30 lessons), Topic 6 – Plant structures and their functions (16 lessons), Topic 7 – Animal coordination, control and homeostasis (22 lessons), Topic 8 – Exchange and transport in animals (12 lessons) and Topic 9 – Ecosystems and material cycles (19 lessons). Together that's 174 lessons — the whole course, with nothing skipped and nothing added.
Little and often beats cramming. One topic a night, done properly — read it, try the questions, check yourself — moves a grade more than a weekend binge the week before the exam. The list above is deliberately complete so you can tick through it a topic at a time.
Start from what's coming up, not from the beginning. If a class test or mock is near, open the unit it covers and work through those topics first. Between assessments, work through units in order — later topics usually build on earlier ones.
For parents:you don't need to know the subject to help. Ask which topic tonight's lesson was, open it here, and let them teach it back to you — explaining something out loud is one of the most effective revision techniques there is. Signed-in students see ticks appear on this page as topics are completed, so progress through the course is visible at a glance.
Edexcel GCSE Biology covers 174 topics across 9 units: Topic 1 – Key concepts in biology, Topic 2 – Cells and control, Topic 3 – Genetics, Topic 4 – Natural selection and genetic modification, Topic 5 – Health, disease and the development of medicines, Topic 6 – Plant structures and their functions, Topic 7 – Animal coordination, control and homeostasis, Topic 8 – Exchange and transport in animals and Topic 9 – Ecosystems and material cycles. Each topic on this page opens a focused revision lesson.
There are 174 topics in Edexcel GCSE Biology, grouped into 9 units. Some content is marked Higher tier and only appears on Higher-tier papers.
Yes — this page lists every unit and topic on the Edexcel GCSE Biology specification, in the order the exam board organises it. Nothing is skipped and nothing is added.
Free revision pages, matched to the specification. No sign-in needed.