Answer:
Enzymes speed up chemical reactions. To do that they must attach to certain parts of molecules so that digestive juices can reach a place they would not otherwise reach. Thus an enzyme would be made so it can grab a molecule in a certain way so that it will expose the molecule to digestive juices and digest it. The enzyme would probably be made so that it enters the small intestine near the stomach. It is folded over in the acidic environment. As it reaches a more alkaline environment, it stretches out and aids in the digestion of any molecule attached to it. It reaches the large intestine to be recycled into the liver.