Biology
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Biology is the study of living organisms and how they interact with each other and their environments. It explores life from the smallest cells to complex ecosystems, helping us understand health, genetics, evolution and the natural world.
This page introduces the major areas of biology and links to clear, accessible learning resources, including videos, articles and practice materials.
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Introduction to Biology
An overview of what biology is, major themes in the subject and why the study of life matters.
Cells and Organelles
Covers cell structure, differences between prokaryotic and eukaryotic cells, and the function of key organelles.
Classification of Living Things
Introduces the system of classification, domains, kingdoms and how scientists group organisms.
Genetics (Basics)
Explains DNA, genes, chromosomes, inheritance patterns and simple Punnett squares.
Human Biology
Human Body Systems
Covers major systems such as circulatory, respiratory, digestive, nervous and immune systems.
Health and Disease
Explains pathogens, immunity, vaccines and factors that affect human health.
Ecology and Evolution
Ecology Basics
Introduces ecosystems, food chains, food webs, populations and environmental interactions.
Evolution and Natural Selection
Covers variation, adaptation, selective pressures and evidence for evolution.
Advanced Biology
Biochemistry (Intro)
Explains biological molecules such as carbohydrates, proteins, lipids and enzymes.
Photosynthesis and Respiration
Covers how organisms produce and use energy.
Biotechnology
Introduces genetic engineering, cloning, CRISPR and real-world applications.
Biology Resources
Biology Videos
Curated free videos explaining key biological concepts, processes and systems.
Biology Practice & Worksheets
Downloadable worksheets and practice tasks covering core topics.
Optional Next Steps
Once learners understand the fundamentals, they can explore:
- Applied Biology – Medicine, agriculture, conservation, biotechnology.
- Research Skills – How scientists design experiments and analyse data.
- Case Studies – Real examples connecting biology to daily life and global issues.