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Investigating the effect of copper sulphate on the rate of reaction. Introduction Enzymes are proteins produced by living cells; they act as a catalyst in biochemical reactions. The enzyme may catalyse a reaction in which the substrate molecule is split into separate molecules. Alternately it may cause the joining of two molecules. There main properties which are common with other catalysts are they remain chemically unaltered by the reaction they catalyse, they are not used up in any one reaction, they do not make reactions occur which usually would not happen and do not alter the amount of product formed. Enzymes are globular proteins (these are long chains of amino acids held together by peptide bonds) and are coiled into precise three-dimensional shape with hydrophilic side chains known as R groups to ensure that they are soluble. The most unique property is the need for an active site to mirror that precisely of...

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