Question

Which statements are correct about the mixture of lysine $(pI = 9.6)$ and glycine $( pI =5.97)$, separated by electrophoresis method or by solubility method?

• A. At $pH =5.97$, glycine does not migrate while lysine moves to the cathode.
• B. At $pH =5.97$, glycine does not migrate while lysine moves to the anode.
• C. At $pH =9.6$, lysine does not migrate while glycine moves to the anode.
• D. At $pH =5.97$ of the mixture of the solution, glycine precipitates out while lysine remains in the solution

Answer 1

Answer: (A), (C), (D)

Correct answer is (a) At $pH =5.97$, glycine does not migrate while lysine moves to the cathode.Correct answer is (c) At $pH =9.6$, lysine does not migrate while glycine moves to the anode.Correct answer is (d) At $pH =5.97$ of the mixture of the solution, glycine precipitates out while lysine remains in the solution