Introduction to metabolism -- Enzymes -- Digestion and absorption -- Glycolysis -- Pyruvate dehydrogenase and the tricarboxylic acid cycle -- Electron transport and oxidative phosphorylation -- The pentose phosphate pathway -- Glycogen -- Gluconeogenesis -- Fatty acid oxidation and ketones -- Fatty acid synthesis -- Triacylglycerol transport and metabolism -- Ethanol -- Phospholipids and sphingolipids -- Eicosanoids -- Glycolipids and glycoproteins -- Cholesterol synthesis and transport -- Steroids and bile acids -- Nitrogen homeostasis -- Amino acids -- Sulfur amino acid metabolism -- Folate and vitamin B12 in one-carbon metabolism -- Purines and pyrimidines -- Heme and iron -- Integration of metabolism.