Monomers are to polymers as amino acids are to what?

Monomers are the small building blocks that link together to form long chains called polymers. Amino acids play the same role for proteins: each amino acid is a tiny unit that can join with others to create a protein chain. When many amino acids bond together, they form the complex three‑dimensional structures that carry out biological functions. For example, the sequence of amino acids in insulin determines its shape and how it signals cells to absorb glucose. Thus, just as monomers build polymers, amino acids assemble into proteins.