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GCSE Biology Enzymes
1. STARTER Fill in the missing words – what do you know about enzymes Enzymes are ………. . They have an ……. site which is a particular shape. A specific ………. fits into this like a key in a ……… . Enzymes work best at an optimum …… and optimum …………. . pH protein substrate active temperature lock
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3. How Enzymes Work Lock Key and theory (Biological Catalysts ) Enzyme Substrate Products Active site
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5. Effect of pH on enzyme activity ISA Ensure that you are working safely by following the safety advice of your teacher! Watch the teacher demonstration! Follow the instructions carefully on your practical sheet pH