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Biology coursework Planning The investigation that I am going to do is a study into the effect of the concentration of the substrate on an enzyme. Enzymes: Enzymes are globular proteins, which act as biological catalysts. They lower the activation energy, the activation energy is the initial energy needed to break the bonds, to start the reaction. Amino acids with hydrophilic side chains are found on the outside on the enzyme, this makes the enzyme soluble, this is important as the amino acids that have hydrophobic side chains are found in the centre of the enzyme. However only a small number of amino acids are found on the active site. They are able to temporarily bind, using hydrogen bonds with the substrate molecules due to a region know as the active site. Because enzymes are proteins their activity can be affected by pH and temperature. The catalytic ability of enzymes depends on their...

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