Question

Give the $pOH$ range for the isoelectric point of the atmospheric ion of an amino acid.

• A. $5.5$ to $6.3$
• B. $2.5$ to $5.0$
• C. $7.7$ to $8.5$
• D. $9.0$ to $10.7$

Answer 1

The correct option is C $7.7$ to $8.5$

The $pH$ at which a particular amino acid does not migrate under the influence of an electric field is called isoelectric point of that amino acid. The pH range for the isoelectric point is from $5.5$ to $6.3$ or the $pOH$range for the isoelectric point is from $7.7$ to $8.5$.