1. It is soluble in water, but insoluble in alcohol.
2. It is a tasteless, sweet or bitter substance.
3. It forms salts with mild acids or bases.
4. They have high melting point.
5. It is bisexual.
6. Its elements are called Zuitter Ions.
7. It is linked by peptide bonds to form proteins.
8. Human body contains alpha amino acids.
9. It contains at least one amino group and one carboxyl group.
10. Amino acids are obtained by hydrolysis of pure protein.