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Electron transport chain

Electron transport chain. Aerobic: with oxygen. Overview of cellular respiration. Aerobic respiration vs. fermentation. Electron Transport Chain Overview. In aerobic respiration, electrons flow from glucose to NAD to membrane associated electron carriers to terminal acceptor

jermaine-burke
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Electron transport chain

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  1. Electron transport chain Aerobic: with oxygen

  2. Overview of cellular respiration

  3. Aerobic respiration vs. fermentation

  4. Electron Transport Chain Overview • In aerobic respiration, electrons flow from glucose to NAD to membrane associated electron carriers to terminal acceptor • Remember the tower!!!

  5. Proton motor force and oxidative phosphorylation

  6. Summary of the electron transport chain • Electrons travel down a chain of proteins from high to low energy • oxygen has the lowest energy and is the ultimate acceptor of electrons • hydrogen combines with molecular oxygen to form water • Series of oxidation/reduction reactions • Energy is released • Hydrogen is pumped to the inter membrane space • Proton gradient formed • Hydrogen moves back to the matrix side and released energy will convert ADP to ATP by oxidative phosphorylation/chemiosmosis

  7. 2 functions of membrane associated carriers • Carry electrons from the primary electron donor to oxygen as the terminal electron acceptor • Energize membrane to make ATP

  8. Generation of proton motor force • As electron flows from one electron carrier to the next, the energy released is used to pump hydrogen ions across the membrane • As hydrogen flows back down its concentration gradient through ATP synthase, ATP is produced

  9. Electronic energy gradient Strong electron donors High energy Strong electron acceptors Low energy

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