Answer:
amino acid sequences
Step-by-step explanation:
Amino acids have different side chains which give them different chemical properties. Side chains of amino acids can be polar, non-polar, acidic, basic or neutral. The building block of peptides is amino acid. Monomers of amino acid join through peptide linkages (-CONH₂) through a condensation reaction with the release of one water molecule. Variation in amino acids sequence gives different properties to the peptides. Polypeptide chains join each other in a 3D conformation to form a protein molecule.