A catalyst is a substance that speed the rate of reaction without being used up. Enzymes are the catalysts in biological processes. They are large proteins that speed up chemical reactions. The enzyme forms the active site from small numbers of amino acids.
             The active site is the location on the enzyme where the substrate collides and the reaction takes place. If the shape of the enzyme and the substrate do not match exactly then they do not bind. This makes sure that the enzyme does not work with the wrong substrate.
             Enzymes are not affected by the reaction, so when the products have been released, the enzyme is ready to bind with a new substrate.
             In my experiment the substrate was the hydrogen peroxide, the enzyme that we used was catalase and the product that was formed was oxygen and water.
             This can be explained by an equation:
             Enzyme + Substrate Product
             Catalase + H202 H20 + 02
             This equation explains how the catalase in our experiment binded with the H202 to break it down and form oxygen.
             The induced fit theory says that the binding of a substrate to an enzyme causes a change in the shape of the enzyme.
             The enzyme and the substrate act on each other to affect the making of the active site to the usual complex between the enzyme and its substrate. As a result, this means the enzyme to catalyze a reaction has changed.
             This shows that enzymes are specific for specific substrates.
             I can tell that the catalase in my experiment is a suitable enzyme to break down the H202 as it will form oxygen as a product which is unharmful
             Denaturing is the damage to the protein structure of an enzyme. Most enzymes react faster as the temperature increases. Enzymes also react at low temperatures, but when the temperature rises above 40 C their reaction rate start to decrease. This
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