What is electrophoresis? a. a technique that separates amino acids on the basis of their polarity b. a technique that separates amino acids on the basis of their solubility in water c. a technique that separates amino acids on the basis of their pi values d. a technique that separates amino acids on the basis of pka of -cooh values e. a technique that separates amino acids on the basis of pka of -+nh3 values