Here's a breakdown:

* Amino Acids: These are the building blocks of proteins. There are 20 different types of amino acids, each with a unique side chain that gives it specific properties.

* Peptide Bonds: These are covalent bonds that form between the carboxyl group of one amino acid and the amino group of another amino acid. This process of linking amino acids together is called polymerization.

The sequence of amino acids in a protein chain determines its primary structure, which in turn influences its overall shape and function.

Think of it like this: A protein is like a long necklace. Each bead on the necklace is an amino acid, and the string holding them together is the peptide bond. The order of the beads and the type of beads determine the overall appearance and function of the necklace.