AQA · GCSE

GCSE Biology Topics

119 lessons across 7 units

This is the complete topic map for the AQA GCSE Biology course — every unit and topic from the specification in one place: 119 lessons across 7 units, from 4.1 Cell biology to 4.7 Ecology. 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.

4.1 Cell biology15 lessons

4.1.1 Cell structure

4.1.2 Cell division

4.1.3 Transport in cells

4.2 Organisation18 lessons

4.2.1 Principles of organisation

Principles of organisation

4.2.2 Animal tissues, organs and organ systems

4.2.3 Plant tissues, organs and systems

4.3 Infection and response17 lessons

4.3.1 Communicable diseases

4.3.2 Monoclonal antibodies

4.3.3 Plant disease

4.4 Bioenergetics8 lessons

4.4.1 Photosynthesis

4.4.2 Respiration

4.5 Homeostasis and response18 lessons

4.5.1 Homeostasis

Homeostasis overview

4.5.2 The human nervous system

4.5.3 Hormonal coordination in humans

4.5.4 Plant hormones

4.6 Inheritance, variation and evolution23 lessons

4.6.1 Reproduction

4.6.2 Variation and evolution

4.6.3 Development of understanding of genetics and evolution

4.6.4 Classification

Classification of living organisms

4.7 Ecology20 lessons

4.7.1 Adaptations, interdependence and competition

4.7.2 Organisation of an ecosystem

4.7.3 Biodiversity and the effect of human interaction on ecosystems

4.7.4 Trophic levels in an ecosystem

4.7.5 Food production

What AQA GCSE Biology covers

The course is organised into 7 units: 4.1 Cell biology (15 lessons), 4.2 Organisation (18 lessons), 4.3 Infection and response (17 lessons), 4.4 Bioenergetics (8 lessons), 4.5 Homeostasis and response (18 lessons), 4.6 Inheritance, variation and evolution (23 lessons) and 4.7 Ecology (20 lessons). Together that's 119 lessons — the whole course, with nothing skipped and nothing added.

How to revise with this page

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.

Common questions

What topics are in AQA GCSE Biology?

AQA GCSE Biology covers 119 topics across 7 units: 4.1 Cell biology, 4.2 Organisation, 4.3 Infection and response, 4.4 Bioenergetics, 4.5 Homeostasis and response, 4.6 Inheritance, variation and evolution and 4.7 Ecology. Each topic on this page opens a focused revision lesson.

How many topics are in AQA GCSE Biology?

There are 119 topics in AQA GCSE Biology, grouped into 7 units.

Is this the full AQA GCSE Biology specification?

Yes — this page lists every unit and topic on the AQA GCSE Biology specification, in the order the exam board organises it. Nothing is skipped and nothing is added.

AQA GCSE Biology revision lessons

Free revision pages, matched to the specification. No sign-in needed.