Many organic substances are negatively charged e.g., acetic acid, while others are positively charged e.g., ammonium ion; an amino acid under certain conditions would have both positive and negative charges simultaneously in the same molecule. Such a form of amino acid is called:
A zwitterion is any molecule or ion that has both positively and negatively charged groups. It is also called a dipolar ion. They have an overall neutral charge.

Question

Many organic substances are negatively charged e.g., acetic acid, while others are positively charged e.g., ammonium ion; an amino acid under certain conditions would have both positive and negative charges simultaneously in the same molecule. Such a form of amino acid is called:

A zwitterion is any molecule or ion that has both positively and negatively charged groups. It is also called a dipolar ion. They have an overall neutral charge.

Philoid · Accepted Answer

A zwitterion is any molecule or ion that has both positively and negatively charged groups. It is also called a dipolar ion. They have an overall neutral charge.