Enzymes are a type of protein macromolecule. Proteins are large biopolymer molecules that are made up of repeating monomer units called amino acids. Enzymes are responsible for speeding up chemical reactions that take place in cells by lowering the activation energy. They are biological catalysts and are responsible for many essential roles in chemical pathways, making materials that cells need, releasing energy, and transferring information.

In summary, enzymes are a type of protein macromolecule.