$\begin{array}{1 1}(a)\;\text{At isoelectric point, alpha amino acid migrate towards cathode when electric field is applied}\\(b)\;\text{At isoelectric point, alpha amino acid migrate towards anode when electric field is applied}\\(c)\;\text{At isoelectric point, alpha amino acid do not migrate when electric field is applied}\\(d)\;\text{Electrolysis of alpha aminoacid is impossible}\end{array} $
