Multiple choice For the identification of which of the following entities is Sanger’s reagent? N-terminal of a peptide chain C-terminal of a peptide chain Side chain of amino acid Molecular weight of the peptide chain Number of amino acids in the peptide chain Reveal answer Fill a bubble to check yourself A Correct answer Explanation This option is correct because Sanger’s reagent is use for determining the N-terminal amino acid in peptide chains, in particular insulin.