Fig. 2 Evolution of Metabolism
Glycolysis
Glucose -> Lactic acid + 2 ATP

Photosynthesis
Sunlight +6 CO2 + 6 H20 -> Glucose + 6 O2

Oxidative metabolism Glucose + 6 O2 -> 6 CO2 + 6 H2O + 36-38 ATP

Fig. 3 Relative Evolution of Cells