ch. 1. Discovery and chemistry of amino acids -- ch. 2. Protein digestion and absorption of peptides and amino acids -- ch. 3. Synthesis of amino acids -- ch. 4. Degradation of amino acids -- ch. 5. Synthesis and catabolism of special nitrogenous substances from amino acids -- ch. 6. Synthesis of urea and uric acid -- ch. 7. Use of isotopes for studying amino acid metabolism -- ch. 8. Protein synthesis -- ch. 9. Intracellular protein degradation -- ch. 10. Regulation of amino acid metabolism -- ch. 11. Physiological functions of amino acids -- ch. 12. Inborn errors of amino acid metabolism -- ch. 13. Dietary requirements of amino acids.