Matching Pairs Hair Building BlocksOnline version Match the hair bond with the correct description. by Rosalind Carter 1 disulfide bonds 2 amino acids 3 peptide bonds 4 polypeptide chains 5 hydrogen bonds 6 keratin proteins Compounds made up of carbon, oxygen, hydrogen, nitrogen, and sulfur. Chemical bonds that join amino acids together, end-to-end, in long chains. Long chains of amino acids joined together by peptide bonds. Strong chemical side bonds formed when the sulfur atoms in two adjacent protein chains are joined together. Long, coiled polypeptide chains. Weak physical side bonds that are the result of an attraction between opposite electrical charges.