I am going to investigate how the temperature affects the catalyse enzyme on hydrogen peroxide, using potato discs for the catalyse.

Aim I am going to investigate how the temperature affects the catalyse enzyme on hydrogen peroxide, using potato discs for the catalyse. Hypothesis Catalyse is a biological enzyme which works best between 30 and 40 degrees, like most enzymes. It also has an optimum pH. Catalyse breaks down Hydrogen Peroxide into water and oxygen. Plant and animal cells contain catalyse. `I predict that the catalyse enzyme found in the potato will break down the substrate (Hydrogen Peroxide) …

…stirring rod, however, that would mean taking out the bung to stir it causing a huge volume of oxygen to be lost. If I had access to better equipment, I would use an electronic magnetic stirrer. Although the temperature was kept as constant as possible there could have been very slight temperature changes in the room which could not be controlled. I would also need to control the amount of sunlight, by keeping the hydrogen