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GCSE & IGCSE Biology

81 free lessons for GCSE and International GCSE. Each one has short notes, a worked example and a quick check with instant marking.

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GCSE · Pearson Edexcel 1BI0

Getting started

4 lessons

1 Key concepts in biology

5 lessons

2 Cells and control

5 lessons

3 Genetics

5 lessons

4 Natural selection and genetic modification

3 lessons

5 Health, disease and the development of medicines

5 lessons

6 Plant structures and their functions

4 lessons

7 Animal coordination, control and homeostasis

4 lessons

8 Exchange and transport in animals

3 lessons

9 Ecosystems and material cycles

5 lessons

International GCSE · Pearson Edexcel 4BI1

Getting started

4 lessons

1 The nature and variety of living organisms

2 lessons

2(a) to (d) Cells, biological molecules and movement of substances

7 lessons

2(e) to (f) Nutrition and respiration

7 lessons

2(g) to (h) Gas exchange and transport

9 lessons

2(i) to (j) Excretion, co-ordination and response

8 lessons

3(a) Reproduction

4 lessons

3(b) Inheritance

11 lessons

4 Ecology and the environment

9 lessons

5 Use of biological resources

6 lessons