Consider a mixture of the amino acids lysine (pI = 9.7), tyrosine (pI = 5.7), and glutamic acid (pI = 3.2) at a pH 5.7 that is subjected to an electric current. ________ "will remain stationary". A) Lysine B) Tyrosine C) Glutamic acid D) All of the amino acids

Question

25-03-2020
Chemistry

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Consider a mixture of the amino acids lysine (pI = 9.7), tyrosine (pI = 5.7), and glutamic acid (pI = 3.2) at a pH 5.7 that is subjected to an electric current. ________ "will remain stationary". A) Lysine B) Tyrosine C) Glutamic acid D) All of the amino acids

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kamlesh678 kamlesh678 · Answer 1 · 2020-03-28T16:19:39+01:00

Answer:

B) Tyrosine

Explanation:

Isoelectronic point (pl) is the point of pH at which the amino acids do not migrate when they are subjected to an electric field.

The pH given in the question is 5.7.

Among the options we can see that only one amino acid has the value of isolectronic point equal to the pH of the solution.

Thus, Tyrosine will remain stationary upon application of electric current because it's isoelectronic point is same as the pH of solution provided.