Question 8 of 9 > Peptides can be separated using an ion-exchange column based on their isoelectrie (pl) values. At which pH values would two different peptides, one with a pl of 5.9 and the other with a pl of 8.5, bind to a caution and anion-exchange column? Each peptide may be capable of binding to each column at more than one pH value. anion-exchange column at cation-exchange column at Answer Bank pH = 3.4 pH = 3.4 peptide A pi=5.9 peptide B plus pH = 7.0 pH = 7.0 pH = 10.9 pH = 10.9