Pearson Edexcel GCSE Biology (1BI0)

71 free lessons that follow the GCSE specification topic by topic. Each lesson has short notes, a worked example and a quick check with instant marking.

Start learning Biology Topic list and checklist

GCSE · Pearson Edexcel 1BI0

Getting started

4 lessons · about 55 minutes

1 Key concepts in biology

9 lessons · about 2 h 20 min

Animal, plant and bacterial cells · video 15 min
Specialised cells · video 14 min
Microscopes and magnification · video 16 min
Core practical: using a light microscope 16 min
Enzymes · video 16 min
Core practical: pH and enzyme activity 16 min
Food tests and the energy in food 15 min
Diffusion, osmosis and active transport · video 16 min
Core practical: osmosis in potato 16 min

2 Cells and control

8 lessons · about 1 h 55 min

Mitosis and the cell cycle · video 15 min
Growth, differentiation and percentile charts · video 13 min
Stem cells · video 14 min
The nervous system and reflexes · video 16 min
Neurones and synapses 14 min
The brain and the eye · video 15 min
Investigating the brain: CT and PET scans 13 min
The eye: colour vision, defects and correction 15 min

3 Genetics

10 lessons · about 2 h 30 min

Meiosis and reproduction · video 15 min
DNA and the genome · video 15 min
DNA structure and extracting DNA from fruit 14 min
Protein synthesis · video 16 min
Genetic variants and how they change proteins 15 min
Mendel and the start of genetics 13 min
Inheritance and Punnett squares · video 18 min
Blood groups, codominance and sex-linked disorders 16 min
Family pedigrees, probability and many-gene characteristics 15 min
Variation and mutation · video 14 min

4 Natural selection and genetic modification

5 lessons · about 74 minutes

Evolution by natural selection · video 16 min
Darwin, Wallace and the pentadactyl limb 14 min
Classification and human evolution · video 14 min
Selective breeding and genetic modification · video 15 min
Tissue culture and solutions for farming 15 min

5 Health, disease and the development of medicines

8 lessons · about 2 h 5 min

6 Plant structures and their functions

7 lessons · about 1 h 45 min

Photosynthesis · video 15 min
Limiting factors in photosynthesis · video 16 min
Core practical: light intensity and photosynthesis 15 min
Transport and water in plants · video 15 min
Transpiration and the potometer 16 min
Leaf structure and plants in extreme environments 15 min
Plant hormones · video 14 min

7 Animal coordination, control and homeostasis