<prompt> Zwitterions haveve ions- ionsve ions - ionsve ions -ve ionsNone of these  <response>: In chemistry, a zwitterion tsvit-r-eye-n; fromGerman zwitter hybrid and formerly called a dipolar ionis a neutral molecule with a positive and a negative electrical charge, distinct from dipoles, at different locations within that molecule. Amino acids are the best-known examples of zwitterions. These compounds contain an ammonium and a carboxylate group and can be viewed as arising a kind of intramolecular acid-basereaction: The amine group deprotonates the carboxylic acid.Ref: Textbook of Medical Biochemistry, MN Chatterji, 8th Edition, Page no: 81 