<P> For example , curd formation ( rennet coagulation ) is a reaction that occurs upon adding the enzyme rennin to milk . In this reaction , the substrate is a milk protein ( e.g. , casein ) and the enzyme is rennin . The products are two polypeptides that have been formed by the cleavage of the larger peptide substrate . Another example is the chemical decomposition of hydrogen peroxide carried out by the enzyme catalase . As enzymes are catalysts , they are not changed by the reactions they carry out . The substrate ( s ) , however , is / are converted to product ( s ) . Here , hydrogen peroxide is converted to water and oxygen gas . </P>
<P> For example , curd formation ( rennet coagulation ) is a reaction that occurs upon adding the enzyme rennin to milk . In this reaction , the substrate is a milk protein ( e.g. , casein ) and the enzyme is rennin . The products are two polypeptides that have been formed by the cleavage of the larger peptide substrate . Another example is the chemical decomposition of hydrogen peroxide carried out by the enzyme catalase . As enzymes are catalysts , they are not changed by the reactions they carry out . The substrate ( s ) , however , is / are converted to product ( s ) . Here , hydrogen peroxide is converted to water and oxygen gas . </P>
hydrogen peroxide is the substrate for which enzyme
hydrogen peroxide is the substrate for which enzyme
catalase
catalase