ENZYMES! 0.0 / 5 ? BiologyEnzymes and digestionIGCSEEdexcel Created by: cninamatosCreated on: 27-05-16 12:17 How does pH affect enzymes? They work best at the optimum pH. Otherwise, their shape is permanently modified; they denature 1 of 6 How does temperature affect enzymes? They work best at optimum temp. Otherwise, their shape alters and they denature. 2 of 6 What is meant when enzymes denature? The shape of their active site changes 3 of 6 Why is denaturing a problem? The substrate no longer fits in the modified active site; no reaction can take place 4 of 6 Define an enzyme. A biological catalyst of metabolic reactions. 5 of 6 What is the optimum pH for stomach enzymes? 2 6 of 6
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