Proteins are made of monomers called

Proteins are made of monomers called amino acids

Explanation:

A monomer is a single molecule that can be joined together with other same molecules to form a polymer. The building blocks of proteins are amino acids, which contain elements such as H,N,O,C , and more. They are the monomers of the proteins. Proteins are made up of 21 different L-amino acids. these amino acids are joined together with peptide bonds. peptide bond is a bond between a caboxylic group of one amino acid with amino group of other amino acid.

the atomic mass is the bottom number on the element.

-steel jelly