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Hydrogen peroxide is a toxic by-product of metabolism in organisms and must be decomposed into its products water and oxygen (in the form of effervescence) in order not to be harmful to the cells of the organism.
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Biology Method - Skill AB BACKGROUND KNOWLEDGE Hydrogen peroxide is a toxic by-product of metabolism in organisms and must be decomposed into its products water and oxygen (in the form of effervescence) in order not to be harmful to the cells of the organism. The enzyme catalase speeds up the decomposition. Catalase catalyses the following reaction: 2H2O2 2H2O + O2 INDEPENDENT VARIABLE: in this experiment the independent variable i.e. the one that is controlled, is the pH level of the solution in which the potato chip is immersed. The independent variable in this particular experiment is not the only factor that affects the rate of the decomposition reaction of H2O2, there are many other factors which are confounding in this experiment: CONFOUNDING VARIABLES: * Temperature of the substrate, buffer solution and the enzyme - the buffered H2O2 solution will be incubated in an electric water bath at temperature 20?C (as this is...
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