| − | '''Amino acids''' are a group of 21 different [[molecule]]s which, when [[chemical bond|bonded]] in sequence, make up [[protein]]s. They consist of an [[organic]] side chain bonded to an ''[[amine]]'' and a ''[[carboxylic acid]]'' (-COOH) group (hence the name ''amino acid''). These two different [[functional groups]] make amino acids [[bifunctional]]. | + | '''Amino acids''' are a group of 21 different [[molecule]]s which, when [[chemical bond|bonded]] in sequence, make up [[protein]]s. They consist of an [[organic]] side chain bonded to an ''[[amine]]'' and a ''[[carboxylic acid]]'' (-COOH) group (hence the name ''amino acid''). These two different [[functional group]]s make amino acids [[bifunctional]]. |