Question

The 20 amino acids found in the human body. The acids are shownin the zwitterionic form in which they exist in water atnear-neutral pH values.

Which group of amino acids has a net positive charge at pH7?

group of nonpolar amino acids

1) group of polar amino acids

2) group of aromatic amino acids

3) group of basic amino acids

4) group of nonpolar amino acids

5) groups of acidic amino acids and their amide derivatives