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Investigating which factors affect the rate of enzyme reaction Introduction to practical: Enzymes are proteins that are able to catalyse the rate of reaction in a living organism. Each enzyme controls a particular reaction and is consistently re-used. In addition, they are affected by several factors, such as temperature, pH, concentration of enzyme and concentration of substrate. An enzyme that is common in living organisms is Catalase, which works to catalyse the decomposition of the mixture hydrogen peroxide to water and oxygen. This enzyme is known to have one of the highest reactions out of all; every second, one molecule of catalase is able to transfer 83,000 molecules of hydrogen peroxide into water and oxygen. When hydrogen peroxide is broken down by catalase, oxygen and water are released. In a catalysed enzyme reaction, molecules named substrates fit into the active site and form an enzyme-substrate complex, a concept which can be...

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