Biology GCSE key terms 0.0 / 5 ? BiologyBiologyIGCSEEdexcel Created by: sandpitturtleCreated on: 14-09-13 23:27 The energy needed to start a chemical reaction Activation 1 of 7 A substance that changes the rate of reaction without being used up Catalyst 2 of 7 The state of an enzyme when it has been irreversibly damaged and has changed shape Denatured 3 of 7 The temperature and pH at which an enzyme-catalyzed reaction proceeds at the fastest rate Optimum 4 of 7 The series of reactions that release energy from glucose, in the presence of oxygen Respiration 5 of 7 A biological catalyst Enzyme 6 of 7 The part of the enzyme into which the reactant molecule fits, ...... site Active 7 of 7
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