Topic 5: Enzymes
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Active site
A specific region of an enzyme where the substrate binds and the reaction takes place.
Catalyst -
A substance that increases the rate of a chemical reaction without being changed itself.
Denaturation
Exposure to high temperatures or extremes of pH, produces a permanent change in the shape of an enzyme’s active site that prevents the binding of a substrate.
Enzyme
A biological catalyst that increases the rate of reactions in living organisms.
Enzyme-substrate complex
The temporary complex formed when the substrate binds to the active site of the enzyme.
Rate of reaction
The speed at which reactants are converted into products.
Substrate specificity
The ability of an enzyme to catalyse only a specific reaction or set of reactions which have substrates complementary to the shape of the enzyme