Three major classes of biological macromolecules are chains of repeated monomers. Which class is the exception, assembled without repeating identical subunits?

Core Concept

Proteins are polymers of amino acids and nucleic acids are polymers of nucleotides; polysaccharides are polymers of monosaccharides. Many lipids, such as triglycerides, are assembled from components such as glycerol and fatty acids but are not polymers made from a long chain of repeating monomer units.