Final answer:
Peptide bonds form between amino acids through dehydration synthesis to create polypeptides, which are the building blocks of proteins.
Step-by-step explanation:
The formulation of peptide bonds between amino acids to build a polypeptide is an example of dehydration synthesis. This type of synthesis occurs when the carboxyl group of one amino acid reacts with the amino group of another, resulting in the formation of a peptide bond and the release of a water molecule. As more amino acids join, a polypeptide chain is formed, which can eventually fold and function as a protein if the chain is long enough. Peptide bonds are covalent and form the backbone of protein structures, while the sequence of amino acids determines the protein's unique characteristics and functions.