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GCSE Biology · Learn
45 lessons in 7 units, about 61 h 45 min of reading and core practice. Each lesson ends with a quick check.
Specification
Unit 1
Cell structure, chemistry and division explain how living systems are built and how substances move into, out of and within cells.
6 lessons · 8 h 30 min of study · ≈16% of the test
Unit 2
Multicellular organisms rely on coordinated organ systems for nutrition, transport, gas exchange and transport in plants.
5 lessons · 8 h of study · ≈15% of the test
Unit 3
Disease processes, body defences, photosynthesis and respiration show how organisms survive, interact with pathogens and transfer energy.
6 lessons · 8 h 30 min of study · ≈16% of the test
Unit 4
Nervous and hormonal systems coordinate responses and keep internal conditions within survival limits.
7 lessons · 9 h 15 min of study · ≈15% of the test
Unit 5
Sexual and asexual reproduction, DNA and inheritance explain how organisms develop and how traits are passed on.
8 lessons · 12 h of study · ≈20% of the test
Unit 6
Ecology explains interactions between organisms and environments, while applied biology addresses sustainability, resources and biotechnology.
8 lessons · 10 h of study · ≈14% of the test
Unit 7
Students must plan, carry out, analyse and evaluate biological investigations and communicate answers accurately in exam conditions.
5 lessons · 5 h 30 min of study · ≈6% of the test
Start here
Cell biology · Lesson 1 of 6
This topic covers the structure and function of eukaryotic and plant cell components, the distinction between cell types visible at this level, and the use of microscopes to observe cells. Exams test identification from diagrams and micrographs, comparison of cells, practical microscopy, magnification calculations and interpretation of scale bars or image size data.
1 h 30 min of study≈3% of the test
Start the first lessonSign in to keep your place and see your mastery on every topic.
Every lesson is free to read. With an account, finished lessons are ticked off, quick checks feed your mastery, and flashcards come back for review.
Strategy, scoring and test day, beyond the syllabus.
Learn, then practise
Each lesson ends with three quick questions. For more, practice adapts to the topics you’re weakest on.
Open practice