Enzymes are globular protein molecules which catalyse biochemical reactions.

The aim of this experiment is to investigate the effect or pH or temperature changes on enzyme activity.

We will study catalase. an enzyme widely distributed in living organisms. It catalyses the decomposition of hydrogen peroxide into water and oxygen:

Factors Affecting Enzyme Activity – Pupil

Factors Affecting Enzyme Activity – Teacher

Factors Affecting Enzyme Activity – Risk Assessment