39. a. Draw the following peptide at physiological pH label it. b. Lysine is a basic amino acid with three pKa values of 2.0,9.0 and 10.5. Sketch the titration Curve for this amino acid. Draw the structures at each inflection point depicting the charge. Identify the polar and non-polar amino acids in the following peptides and give the charge to the peptide at pH 1.0 and 7.0 VMSIPRCYL