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(B) Glycine is an amino acid with an isoelectric point $(pI)$ of $5.97$. At this $pH$,glycine exists as a zwitterion,meaning it has no net charge and

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Anaphoresis

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(B) Glycine is an amino acid with an isoelectric point $(pI)$ of $5.97$. At this $pH$,glycine exists as a zwitterion,meaning it has no net charge and does not move towards any electrode in an electric field.When a base is added,the $pH$ of the solution increases above the $pI$ $(pH > 5.97)$.In a basic medium,the amino acid loses a proton from the $-NH_3^+$ group,resulting in a net negative charge on the glycine molecule.Since the colloidal particles become negatively charged,they will move towards the anode under the influence of an electric field.The movement of negatively charged colloidal particles towards the anode is known as $Anaphoresis$.

In an electrophoresis setup,a colloidal solution of glycine having a $pH$ of $5.97$ is kept at constant $T$ and $P$. What will happen if a few drops of base are added to it?

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