Final answer:
Individual amino acids are connected by peptide bonds to form a polypeptide chain, which serves as the building block for proteins.
Step-by-step explanation:
The blue boxes surround individual amino acids and the red text shows the position of the peptide bonds (peptide or amide linkages) joining the amino acids together making a polypeptide. A peptide bond is an amide bond that links two amino acids together. When the amino group of one amino acid reacts with the carboxyl group of another, releasing a water molecule, this bond is formed. The chain of amino acids formed by repeated peptide bonds is known as a polypeptide. Polypeptides are the building blocks of proteins, and they acquire unique functions and shapes after undergoing further processing and modifications post-synthesis.