Nature of aqueous solutions of two different amino acids 'X' and 'Y' are acidic and basic. Here 'X' and 'Y' are
Alanine and valine
Aspartic acid and asparagine
Glutamine and Glutamic acid
Aspartic acid and lysine
NH2 is a basic group, whereas COOH is an acidic group.
Aspartic acid's structure.
Structure of Lysine :