and acidic group 
.
Answer:
Ammo acids have amino 
group, basic in
nature and carboxyl 
group which is
acidic in nature. In aqueousmedium, NH^ group accepts a proton and 
group
loses aproton forming a dipolar ion, called the Zwitter ion. In this form,amino
acids behave both as acids and bases so they are amphotericin nature.
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