7.9.3 Amino acids (restricted to & amino acids )

Formulae of glycine and alanine only.

Optical activity of alanine.

Solubility in water and relatively high melting point due to existence as dipolar ions.

Reactions with Na₂CO₃, CuSO₄ and HNO₂.

Proteins regarded as a sequence of amino acids joined by a peptide link.