What biological macromolecule is made up of monomers

Carbohydrates, proteins and fats are the biological molecule that are made up of monomeric units.

Explanation:

Polysaccharides are the starches that are comprised of at least two monosaccharides. For instance, starch is made up of many glucose units. Proteins have amino acids as their monomer units.

There are twenty different amino acids that combines at different proportion to form different proteins. Fats are the lipids that have fatty acid and glycerol as their monomeric units.