An investigation into the breakdown of Hydrogen Peroxide by Catalase.
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An investigation into the breakdown of Hydrogen Peroxide by Catalase Background Theory An enzyme is a protein. It is a globular protein - its molecules are round in shape and they usually have an area shaped like a pocket. This 'pocket' is called the active site. This is the area where a substrate can join the enzyme and be divided into two or more products. It can be compared to a 'lock and key' system, the lock being the substrate, and the key the enzyme. This is demonstrated in the diagram below: ENZYME ENZYME and SUBSTRATE ENZYME We could think of this process as similar to a person catching a ball. As the ball enters the person's hands they close around it. In the case of the enzyme, the 'ball' is the substrate and the 'hands' the enzyme. The enzyme 'catches' the substrate and then it puts pressure on the bonds within it....


