How does the structure of this enzyme with its function

Function of enzymes in catalyzing biological reactions Enzymes are catalysts, which are things that increase the rate of a reaction, but does not get used up during the reaction. Structure determines function. A change in structure => a change in function. Important biological reactions catalyzed by enzymes: Metabolism.

The enzyme's shape fits its substrate's shape, thus allowing the enzyme to catalyze the appropriate reaction.

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you know they are heterozygous for a trait because they have it as jj or jj.