Cells and their function

An explanation of the purpose and function of a cell.

Cells and their uses

Substances move through cell membranes by active and passive transport.

Cells, tissues and organs in plants

Specialised cells in plants are organised into tissues, organs and systems.

Components of a plant cell

The presenters build a plant cell and describe the role of each component.

Digestive enzymes

The roles of different enzymes in digestion are discussed with an overview of digestion.

DNA and proteins

Synthesis of proteins, the composition of DNA and the effects they have on an organism.

Enzymes

Enzymes are natural catalysts that act on specific substrates at optimum conditions.

Fleming and the discovery of penicillin

Sir Alexander Fleming on how he discovered the world's first antibiotic, penicillin.

Gene therapy and cystic fibrosis

Explanation of the cause and effects of the genetic disorder cystic fibrosis.

Genetic engineering

DNA transfer between bacterial cells by plasmids is the basis for genetic engineering.

7 learner guides

We have a selection of learner guides