How to pronounce “carboxyl group” in English

And the last thing it's bonded to could be one of 20 different side chains, and which one determines which of the 20 different amino acids this molecule is.The amine group from one amino acid can react with the carboxyl group of another to form a peptide bond.So a series of amino acids can bond to form a string and pushing and pulling between countless molecules, electrostatic forces, hydrogen bonds, solvent interactions