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The affect of substrate concentration on the rate of a reaction catalysed by the enzyme potato catalase.
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The affect of substrate concentration on the rate of a reaction catalysed by the enzyme potato catalase Introduction Enzymes are protein molecules, which can be defined as biological catalysts. They speed up chemical reactions, but they don't alter throughout the reaction. Enzymes are globular proteins, the enzyme molecules is coiled into a precise three-dimensional shape, with hydrophilic R groups on the outside of the molecule ensuring that they are soluble. They possess and active site, which is a precise shape indented into the enzyme, this acts like a 'lock' for the 'key' that is attached to the substrate of the enzyme. The shape of this active site allows the substrate to fit perfectly, and to be held in place by temporary bonds, then for it to be split into other molecules, or 2 or more molecules to be joined together. When the reaction is finished the products leave the active site and...
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