All of these four biological molecules are polymers. These four molecules are called macromolecules as they have a big structure. Biological macromolecules are polymers made up of monomers by a process called polymerization. The monomers of carbohydrates are monosaccharides. The monomers of lipids are fatty acids. The monomers of proteins are amino acids. The monomers of nucleic acids are nucleotides.
