Enzymes convert some proteins into other proteins, help in making proteins, and help make non-proteins, like lipids, carbohydrates, etc.
Proteins consist of a non-branched chain of amino acids , hooked end to end.
There are twenty-some different kinds of amino acids so the sequence of different kinds of amino acids can produce millions of different kinds of proteins, potentially. Simple carbohydrates include glucose. Starch, Cellulose, and Glycogen are long, branched, chains of glucose. Starch is used for storage of glucose in plants and Glycogen is used in animals for the same purpose. We can digest starch but not cellulose.