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 migrate towards the positive electrode(+) .
A) Lysine
B) Tyrosine
C) Glutamic acid
D) All of the amino acids
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