Breathing and circulation
An explanation of the process of breathing and how blood is transported around the body.
Cells, tissues and organs
A description, with examples, of the difference between tissues and organs.
Cells, tissues and organs in plants
Specialised cells in plants are organised into tissues, organs and systems.
Components of an animal cell
An animal cell is built showing the role of the membrane, nucleus and cytoplasm.
Coronary heart disease
The symptoms and causes of coronary heart disease.
Digestive enzymes
The roles of different enzymes in digestion are discussed with an overview of digestion.
DNA and the Human Genome Project
An introduction to DNA, the Human Genome Project and genetic screening for diseases.
Fleming and the discovery of penicillin
Sir Alexander Fleming on how he discovered the world's first antibiotic, penicillin.
Gaseous exchange in the lungs and the importance of alveoli
Gaseous exchange in the lungs and the important role played by the alveoli is explained.
Gene therapy and cystic fibrosis
Explanation of the cause and effects of the genetic disorder cystic fibrosis.
5 learner guides
We have a selection of learner guides