Phase 5: Spread of disease between humans is occurring in more than one country of one WHO region. Phase 6: Community-level outbreaks are in at least one additional country in a different WHO region from phase 5. A global pandemic is under way.
Figure %: The Electron Transport Chain. The events of the electron transport chain involve NADH and FADH, which act as electron transporters as they flow through the inner membrane space. In complex I, electrons are passed from NADH to the electron transport chain, where they flow through the remaining complexes. NADH is oxidized to NAD in this process.
It inhibits a protein complex called cytochrome c oxidase in the Electron Transport Chain on the mitochondrial inner membrane. This protein complex is responsible for transferring 4 electrons to one oxygen molecule and convert it into two water molecules. The Electron Transport Chain serves to maintain redox balance and establish a proton electrochemical gradient which drives the synthesis of ATP, the cell's energy currency.