Biology Unit 2 - Proteins And Their Functions And Uses 0.0 / 5 ? BiologyProteinsGCSEAQA Created by: RobynOrdishCreated on: 08-06-17 14:35 What are proteins made up from? Long chains of smaller molecules called amino acids. 1 of 21 Name a biological catalyst. Enzymes. 2 of 21 What is it called when the shape of an enzyme changes and it can no longer carry out a certain function? This is called denaturing. 3 of 21 What do proteins act as? Structural components of tissues, Hormones, Antibodies, and Biological catalysts. 4 of 21 What is a biological catalyst? They are substances that increase the rate of chemical reactions without being used up. 5 of 21 What are enzymes? Enzymes are proteins folded into complex shapes that allow smaller molecules to fit into them 6 of 21 What is the Active Site? It is a place where substrate molecules join together. 7 of 21 What can cause the enzyme to become denatured? It can become denatured by high temperatures or extremes of pH. 8 of 21 What reaction does the enzyme Amylase catalyze? Starch ---> Sugars 9 of 21 What reaction does the enzyme Protease catalyze? Proteins ---> Amino Acids 10 of 21 What reaction does the enzyme Lipase catalyze? Lipids ---> Fatty Acids + Glycerol 11 of 21 Where is the enzyme Amylase produced? Salivary glands, pancreas and small intestines. 12 of 21 Where is the enzyme Protease produced? Stomach, pancreas and small intestines. 13 of 21 Where is the enzyme Lipase produced? Pancreas and small intestines. 14 of 21 What is the function of Lipase? It breaks down fats. 15 of 21 What is the function of Protease? It breaks down proteins. 16 of 21 What is the function of Carbohydrase? It breaks down carbohydrates. 17 of 21 In industry, what is Protease used for? Used to pre-digest proteins during the manufacture of baby foods. 18 of 21 In industry, what is Lipase used for? Used - together with protease - in biological detergents to break down (digest) the substances in stains into smaller, water soluble substances 19 of 21 In industry, what is Carbohydrase used for? Used to convert starch syrup, which is relatively cheap, into sugar syrup, which is more valuable - for example, as an ingredient in sports drinks 20 of 21 In industry, what is Isomerase used for? Used to convert glucose syrup into fructose syrup - fructose is sweeter than glucose, so it can be used in smaller amounts in slimming foods 21 of 21
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