Enzymes are made up of amino acids , they are proteins. The chain of aminoacids fold to unique shape to form enzymes.
Enzymes speed up a chemical reaction. They bind to molecules and alter tgem in specific ways . It reduces the activation energy for a reaction and thus speed up the reactuon at a much higher rate.
With in the cell the molecules which are substrate for a chemical reaction bind to specific site of enzymes called active sites and carry out the reaction.
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