... my hypothesis. First of all I will use the 'lock and key' theory. All enzymes are specific and there is one enzyme per function. The enzyme that I am investigating is called Catalase and its function is that it can only break down Hydrogen Peroxide. Just like no other enzyme will be able to break down Hydrogen Peroxide. Catalase is found in potato or liver. If the enzyme is heated up to say 45°C the active sit will change, but our substrate will stay the same. We say that our enzyme has been denatured. The substrate no longer fits. What has happened to the enzyme is not reversible-it is permanent. If we take another fully functional enzyme but this time cool the enzyme down, like before the active site will change and our substrate stays the same. But this time what has happened to the active site is mot permanent. Heating up the enzyme can reverse what ...

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