Question

Why is oxygen necessary for complete oxidation of glucose?

Answer 1

1. The three steps of aerobic respiration use glucose as their energy source. Glycolysis is the initial phase, which doesn't need oxygen.
2. Kreb's cycle is the name of the second phase. A series of intricate chemical processes make up this cycle, which results in the production of more NADH.
3. Electron transport phosphorylation is the last phase. In this phase, electrons are transported to the cells via the transporters FADH and NADH. ATP is created using the electrons' energy.
4. After being used, the electrons are then given to hydrogen and oxygen atoms to create water.
   Therefore, oxygen is needed for full oxidation.