1) What is the definition of an enzyme? a) You spread it on your toast b) Its a biological catalyst that speeds up chemical reactions with out being changed or used up. 2) Enzymes... a) Build larger molecules using smaller molecules. b) Break down larger molecules into smaller molecules. c) Both 3) The thing that binds to the enzyme is called the substrate. a) True b) False 4) The part of the enzyme that the substrate binds to is called the  a) activity hall b) active site c) adenine place 5) The enzyme and substrate are specifically shaped to only fit each other a) True b) False 6) What is the lock and key hypothesis a) only the substrate that fits the enzyme will be able to be used. b) any substrate will fit any enzyme. 7) What is formed when the enzyme and substrate bond? a) Enzyme complex b) enzyme-substrate complex c) whole enzyme 8) What is the primary function of enzymes in biological processes? a) To absorb nutrients b) To act as catalysts c) To store energy d) To transport oxygen 9) Which factor can affect the rate of an enzyme-catalysed reaction? a) The shape of the container b) The pH level c) The colour of the solution 10) What term describes the molecule upon which an enzyme acts? a) Inhibitor b) Substrate c) Product d) Catalyst 11) What is the optimal temperature for enzymes to function effectively? a) 10°C b) 38°C c) 40°C d) 37°C 12) What word means 'the best' or 'the most beneficial'? a) Opal b) Denaturing c) Optimum d) Extreme

Enzymes

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