Answer
The building blocks of proteins are the amino acids, bound together by peptide bonds.
Work Step by Step
A protein is a complex bio-molecule composed of amino acids, an organic compound of a carboxyl (-COOH) and amino group (-NH2). To bound together, these amino acids do a biochemical reaction(peptide bonds) that extracts a water molecule, while the amino group of one amino acid join the carboxyl group of other.
