Enzymes and Other Proteins 3.0 / 5 based on 1 rating ? BiologyEnzymes and digestionGCSEWJEC Created by: eeeeeeeeeeeeeeCreated on: 20-04-14 14:47 Enzymes are not... Cells 1 of 22 Which proteins control all the chemical reactions which occur in cells? Enzymes 2 of 22 What are proteins made of? A chain of smaller molecules called amino acids 3 of 22 A protein will have... Hundreds or even thousands of amino acids 4 of 22 Amino acid chains are folded in a particular way to form a... 3D shape which is different for every protein and essential to the function of the enzyme 5 of 22 What is the substance that an enzyme works on? Substrate 6 of 22 Enzymes have to attach and make contact with a substrate, for this... The shapes must match so that they can lock together 7 of 22 The place where on an enzyme where a substrate attaches is called... The active site 8 of 22 Enzymes are... Specific (they must match the shape of the active site) 9 of 22 When enzyme and substrate are locked together, the combined structure is called... Enzyme substrate complex 10 of 22 The explanation of how enzymes work is called... The lock and key theory - just as a key will only open one lock, an enzyme will only work on one type of substrate 11 of 22 Does an enzyme and a substrate react together or just join? Join 12 of 22 What are enzymes? Biological catalysts 13 of 22 Do enzymes take part in the chemical reaction? No they only speed it up 14 of 22 Each enzyme has it's own optimum... pH and temperature 15 of 22 What happened to enzymes when they are boiled? They are denatured(destroyed) 16 of 22 What breaks the chemical bonds that hold an enzymes active site in shape? Heat 17 of 22 If the pH is very far from the optimum, can the enzyme be denatured? Yes possibly 18 of 22 Which is true? The enzyme and the substrate each have a particular molecular shape. 19 of 22 What will happen if an enzyme is boiled? The shape of its active site will change and the substrate will no longer fit 20 of 22 What is the substrate for amylase? Starch 21 of 22 Amylase... Catalyses the breakdown of starch 22 of 22
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