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Catalase Investigation
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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BIOLOGY GCSE PRACTICAL ASSESMENT 1. Our investigation is to find the rate of catalase activity. Catalase is an enzyme, which in this case is used to break down Hydrogen Peroxide. SUBSTRATE ENZYME PRODUCTS 2H²0² Catalase 2H²0 + 0² Enzymes are catalysts, which means that they are used to speed up reactions. They are not changed or used up in reactions at all. They have molecules with a 3-D shape and they work best at about a pH of 7 because, as they are proteins, they are denatured by very acid and alkaline conditions. As they are proteins they are also denatured by high temperatures. They work quickest at their optimum temperatures (the best kind of environment suitable for them). It is the yeast that makes the catalase. Yeast is a living cell (it is a fungi). Inside the yeast hydrogen peroxide is produced and as it is toxic, the...
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