Introduction I am going to investigate how the concentration of hydrogen peroxide affects the rate of reaction between the hydrogen peroxide, and it's enzyme, catalase, which is found in yeast. There are many other factors which will affect the speed with which this reaction can take place. These include; -The concentration of the substrate (Hydrogen peroxide) -The concentration of the yeast solution -The temperature of both the substrate and of the yeast solution -The ph …showed first 75 words of 4251 total…

…showed last 75 words of 4251 total…of the experiment. <Tab/>Another problem was the residue of water left in the boiling tube after washing the equipment each time. This could be eliminated by drip-drying the boiling tube, rather than just leaving it to dry. (I would not dry it using a towel, as that could leave residue which could affect the reaction.) Bibliography Internet Websites A-Level Textbook GCSE Textbook,<Tab/>Dictionary of Science.