In glycolysis, what is the importance of the initial phosphorylation of glucose? And in the krebs cycle, do the redox reactions occur in the same steps of oxidation reactions? For example steps 3,4,6, and 8 are oxidation steps that contain dehydrogenase enzymes, but since they convert NAD+ to NADH (steps 3,4,8) and FAD to FADH2, does that make them redox steps as well?