The substrate is the specific molecule that binds to an enzyme, and it undergoes a chemical reaction to form a product.
Think of the substrate as a key fitting into an enzyme lock. Only the right key (substrate) can unlock the enzyme and start the reaction.
Active Site: The region on the enzyme where the substrate binds and the reaction takes place.
Enzyme-Substrate Complex: The temporary complex formed when the substrate binds to the active site of an enzyme.
Product: The end result of a chemical reaction catalyzed by an enzyme.
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