Which of the following statements is not correct about a Zwitter ion? 

In aqueous solution, the carboxyl group can lose a proton and amino group can accept a proton, giving rise to a dipolar ion known as Zwitter ion.  It contains both positive and negative charges, but due to cancellation of charge it appears neutral.
Ampholytes and zwitterions are molecules with at least two pK_a values, at least one of which is acidic and at least one is basic.