Abstract:1.1 Introduction1.2 Energy generation in the cell1.3 Carbohydrate metabolism1.4 Respiratory chain pathways1.5 Anaerobic metabolism1.6 Anaerobic respiration1.7 Photosynthesis1.8 Amino acids synthesis1.9 Nucleic acid synthesis and its control1.10 Fatty acid metabolism and degradation1.11 Phosphotransferase system (PTS)1.12 Carbohydrate metabolism other than glucose1.13 ATP generation under aerobic and anaerobic conditions1.14 Metabolic regulation and futile cycle