please help answer question 3 a to c thank uou

3. The accompanying figure is the titration curve of an unidentified amino acid. pH Titration 14 12 10 2.5 3.5 1.5 Equivalents of a) Estimate the pKa values of the ionizable groups. b) Is the amino acid glycine, glutamic acid, or lysine? c) Using the table below, determine the isoelectric point of the amino acid. ionization curves, identification of weak acids by titration, isoelectric point) TABLE 32 pk, values of acidic and baske constituents of free amino acids 296 Amino acid a value Carboxyl Amino Side group group chain Glycine 24 Alanine 24 % Valine 2.3 1.7 holetine 33 Methionine 2.13 Proline 20 10.6 Phenylalanine 2. 93 Tryptophan 2.5 *4 3 Threonine 2.1 Greine 19.7 8.4 Tyrosine 10.5 Aspargine 21 Glutamine 2.2 Asparekid 20 Glutamic acid 2.15 4.1 Lysine 2 1 10.5 12.5 Histidine 18 Table Principles of Biochemistry Prene