Maltase is an enzyme found in the body that breaks down maltose. Explain why maltase can only catalyse this reaction?

All enzymes have active sites which are highly specific to their role within the body- the active site being the part of the enzyme in which the enzyme and the substrate (the thing it is reacting with) interact. Most enzyme have an active site specific to a single substrate.Maltose is a substrate and maltase is an enzyme. They have a complimentary shape to one another and therefore can bind to form an enzyme-substrate complex. Only maltose can bind to the active site of maltase to form the required enzyme-substrate complex.