COVER -- CONTENTS -- ORIGIN OF THE EARTH -- ORIGIN OF BIOMOLECULES -- ATOMS AND MOLECULES -- WATER -- CHEMICAL BONDS -- CELL AS A UNIT OF LIFE -- BIOMEMBRANES -- FLOW OF ENERGY IN A CELL -- CARBOHYDRATES -- LIPIDS -- AMINO ACIDS -- PROTEINS -- ENZYMES -- NUCLEIC ACID (DNA) -- RIBONUCLEIC ACID (RNA) -- BIOSYNTHESIS OF PROTEIN -- BIOSYNTHESIS OF PURINE AND PYRIMIDINE -- AMINO ACID METABOLISM -- METABOLISM OF INDIVIDUAL AMINO ACIDS -- METABOLISM OF CARBOHYDRATES -- METABOLISM OF LIPID -- CATABOLISM OF NUCLEOTIDES -- VITAMINS -- HORMONES -- INBORN ERRORS OF METABOLISM -- INDEX.