$25\mathrm{.}49$ Using the data in Table $25\mathrm{.}2,$ calculate the pI of the following amino acids:

$($a$)$ L$-$Alanine

$($b$)$ L$-$Asparagine

$($c$)$ L$-$Histidine

$($d$)$ L$-$Glutamic acid

$25\mathrm{.}53$ A mixture containing glycine, L$-$glutamine, and L$-$asparagine was subjected to electrophoresis. Identify which of the amino acids moved the farthest distance assuming that the experiment was performed at the $pH$ indicated:

$($a$)6\mathrm{.}0$

$($b$)5\mathrm{.}0$