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Catalase Investigation Planning In this investigation I intend to find out how surface area affects an enzyme catalysed reaction. To do this I will conduct an experiment using a potato (which contains the enzyme Catalase), Hydrogen Peroxide, water bath, test tube, bung + collecting tube and a measuring cylinder. I have chosen to use a potato as the catalyst for the reaction as it makes it easy to test surface area and it simulates the surface area much better than just a liquid enzyme. I have chosen the other pieces of equipment simply because they are what's available. First of all I will fill the water bath up to about 3/4 of its capacity, this is because of the displacement that occurs when I put the measuring cylinder in and from a bad experience in the preliminary experiment I will not make the mistake of filling it up to the top again....

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