Choose the INCORRECT statement.
A) Amino acids can exist as dipolar ions.
B) Dipolar ions are also called zwitterion.
C) Isoelectric point is the pH at which an amino acid becomes a cation.
D) Two amino acids joined by the elimination of a water molecule is a dipeptide.
E) A large polypeptide of more than 10,000 U is called a protein.
Correct Answer:
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