The full Cambridge IGCSE Biology course, Core and Extended: how living things are classified and built, how they feed, breathe, move substances and stay in balance, how they reproduce and pass on their features, and how they interact with each other and with us.
Lesson 1 is free to try. The other 103 lessons in Biology and its exam practice are for schools on RudimentaryLabs.
What makes something alive, and how scientists sort and name the millions of living things.
Cells, the jobs of their parts, and how cells build tissues, organs and whole organisms.
How diffusion, osmosis and active transport move substances across cell membranes.
The carbohydrates, fats, proteins and DNA that living things are made of, and how to test for them.
The protein catalysts that speed up the reactions of life, and what makes them work or fail.
How plants use light to make their own food, and how leaves are built to do it.
What a healthy diet contains, and how your gut breaks food down and absorbs it.
How water climbs from roots to leaves, and how sugars travel to where they are needed.
The heart, blood vessels and blood that carry materials around the body.
How pathogens spread, how we stop them, and how the body fights back and remembers.
How your lungs get oxygen in and carbon dioxide out, and how breathing changes with exercise.
How every living cell releases energy from food, with or without oxygen.
How the lungs, kidneys and liver remove the waste products of the body's chemistry.
Nerves, senses, hormones and homeostasis in animals, and how plants respond to light and gravity.
What drugs are, how antibiotics treat bacterial infections, and why resistance is a growing problem.
Asexual and sexual reproduction in plants and humans, from pollination to pregnancy.
Chromosomes, genes, cell division and how features pass from parents to offspring.
Why individuals differ, how features suit environments, and how selection changes species.
Food chains, energy flow, nutrient cycles and how populations grow.
How farming, habitat loss and pollution affect ecosystems, and how we can conserve them.
Using microorganisms and enzymes to make useful products, and changing the genes of organisms.