Enzymes and Digestion/Respiration Amalyase, Protease, and Lipase 2.5 / 5 based on 3 ratings ? BiologyEnzymes and digestionGCSEAll boards Created by: Kavita :)Created on: 09-01-11 15:10 Amalyse Protease Lipase enzyme reaction catalysed amylase starch > sugars protease proteins > amino acids lipase lipids > fatty acids + glycerol Production Amylase: Salivary Glands, Pancrease, Small Intestine Protease: Stomach, Pancrease, Small Intestine Lipase: Pancreas, Small Intestine 1 of 4 Enzymes and Respiration RESPIRATION is the process of RELEASING ENERGY FROM GLUCOSE, which goes on IN EVERY CELL Aerobic respiration is respiration using oxygen. Energy released is used for: Build large molecules from smaller ones (amino acids > protein) Animals > allow muscles to contract Mammals + birds > keep body temperature steady Plants > build sugars, nitrates and other nutrients into amino acids > protein 2 of 4 Uses of Enzymes Enzymes are used in biological detergents and washing powders. They are mainly protein-digesting enzymes (proteases) and fat-digesting enzymes (lipases) Enzymes are used to change foods. Proteins in baby foods are pre-digested (proteases) Carbohydrate-digesting enzymes (carbohydrases) turn starch syrup into sugar syrup. Glucose syrup into fructose syrup. Fructose is much sweeter, so you can use less of it 3 of 4 Enzymes in Industry Speed up reactions without the need for high temperatures and pressuers Advantages Specific, only catalyse the reaction you want them to Lower costs and saves energy Enzymes work for a long time Biodegradable > less environmental pollution Disadvantages Develop allergies Denatured enzymes by even a small increase in temperature Contamination of the enzyme with substances can affect reaction 4 of 4
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