Chapter 20, Problem 20.92AP

(a)

Interpretation Introduction

Interpretation: Three amino acids are being dissolved in a gel at $\text{pH}-5.9$. Two electrodes are to be placed in this gel. The given questions are to be answered if an electric current is applied.

Concept introduction: The zwitterions are the molecules which comprises both positively and negatively charged groups.

Amino acid is the compound which comprises amino $\left(-{\text{NH}}_{\text{2}}\right)$ group and carboxyl $\left(-\text{COOH}\right)$ functional group.

The isoelectric point is the $\text{pH}$ at which the amino acid molecule have zero charge.

To determine: The direction of migrated amino acids toward the electrode.

(b)

Interpretation Introduction

To determine: The structure of the each amino acid present in the gel at a $\text{pH}-5.9$.