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ENZYME COURSEWORK PLAN Planning my Investigation I am trying to find out what affects the rate of reaction, when a 20 volume solution of Hydrogen Peroxide and a yeast suspension solution are mixed together in a conical flask. To measure the reaction I will count the bubbles of oxygen given off by the reaction, which will take place in a large beaker of water. The affect of the reaction is how much oxygen given off in a certain amount of time. An enzyme is a biological catalyst. They speed up the rate of a reaction but they are not affected themselves during the reaction. Enzymes are specific; this means that there is only one substrate that they will work on. Each enzyme has an active site. This is where their specific substrate's molecule will fit into and is broken down. Enzymes all work best at an optimum temperature. The optimum temperature...

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