What do we call large organic molecules made up of repeating units?

Large organic molecules composed of repeated smaller units are termed polymers. Polymers are formed through the process of polymerization, where many small identical or similar structures, known as monomers, are chemically bonded together. This characteristic gives polymers their unique properties, depending on the nature of the monomers and how they are arranged.

For example, proteins, nucleic acids, and carbohydrates are all types of polymers. Each of these macromolecules serves different functions in biological systems, such as serving as structural components, energy sources, and information carriers.

Monomers refer to the individual building blocks that combine to form polymers, whereas dimers are specific types of molecules made from two monomers. Copolymers consist of two different types of monomers. Thus, the focus on the term "large organic molecules" makes "polymers" the most appropriate term, as it accurately describes the structure and formation of these macromolecules.