FIGURE 7.1 Physiological free energy diagram for the glycolysis reaction for one of the two glyceraldehyde-3-phosphate generated in glycolysis. G, glucose; G-6-P, glucose-6-phosphate; F-6-P, fructose-6-phosphate; F-1,6-bP, fructose-1,6-bisphosphate; Ger-3-P, glyceraldehyde-3-phosphate; DHA-P, dihydroxyacetone-phosphate; 3-P-Gly, 3-phosphoglycerate; 2-P-Gly, 2-phosphoglycerate; PEP, phosphoenolpyruvate. Vertical height is proportional to the change in free energy (ΔG).