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Effect of Substrate concentration on the enzyme catalase.
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Sumudu D. Lankatilake L6B Biology Coursework Effect of Substrate concentration on the enzyme catalase Scientific knowledge Enzymes Enzymes are catalysts, that is they increase the rate of a reaction, which would otherwise react very slowly without the presence of an enzyme. The products of reactions, with the use of enzymes, are therefore obtained more quickly. Enzymes have an area on their molecules that have a specific shape in which the substrate molecules can fit into and combine or separate. This site on the enzyme is called the active site. All enzymes are globular proteins and within the cell they have two fundamental roles: * They act as highly specific catalysts greatly speeding up chemical reactions that would be hopelessly slow. * They provide a mechanism whereby individual chemical reactions can be controlled, the available quantity of an enzyme determining the rate of the corresponding action. Enzymes are made up of chains of amino acids that are twisted and folded...
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