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To investigate the factors that affect the time taken for the digestion of casein in milk by trypsin, and to see what factors will make the reaction go faster or slower.
Member rating: No Rating | Words: | Submitted: Wed Sep 10 2003
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AIM: To investigate the factors that affect the time taken for the digestion of casein in milk by trypsin, and to see what factors will make the reaction go faster or slower. BACKGROUND INFORMATION: Enzymes are proteins that act as biological catalysts and are found in cells. They speed up the chemical reactions in living things. Our guts would take weeks and weeks to digest our food without enzymes, our muscles, nerves and bones would not work properly and so on - we would not be living without them. TABLE OF DIGESTIVE ENZYMES: SECRETIONS ACTION Salivary Glands Amylase Starch --> Maltose Stomach Pepsin Proteins --> Polypeptides HCR Kills bacteria Pancreas Amylase Starch --> Maltose Trypsin Polypeptides --> Amino acids Lipase Fats --> Fatty acids + Glycerol Liver Bile Emulsifies fats Ileum Maltase Maltose --> Glucose Sucrase Sucrose --> Glucose + Fructose A catalyst is any chemical substance that makes a chemical reaction go faster, without being changed itself. A catalyst can be used over and over again in a chemical reaction: it does not get used up. Enzymes are very...
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