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Biology - The Processes of Life


Enzymes Definition : Enzymes are proteins that speed up chemical reactions

Lock and Key

Chemical reactions usually involve things either being split apart or joined togther. A substrate is a molecule that is changed in a reaction. Every enzyme molecule has an active site - the part where a substrate joins on to the enzyme. Enzymes only speed up one reaction. This is because, for an  enzyme to work, a substrate has to be the correct shape to fit into the…


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