Oxidative phosphorylation

• Where does it occur

  Inner mitochondrial membrane (cristae)
• During oxidation reduced NAD and FAD release H+ atoms which are split into protons and electrons
• In the electron transport chain electrons are passed from one carrier to the next releasing energy this is used to pump protons from the matrix to the intermembrane space
• The enzyme ATP synthase allow protons to move back into the matrix down a concentration gradient producing lots of ATP
• In the matrix the final electron acceptor which is oxygen combines with protons and electrons to produce water
• What is substrate level phosphorylation

  Direct transfer of phosphate from a molecule onto ADP to form ATP
• diagram

  A) inter membrane space

  B) ATP synthase

  C) reduced NAD

  D) FAD

  E) 2H

  F) 2H+

  G) 2e-

  H) electron carriers

  I) 2e-

  J) produces energy

  K) 2e-

  L) 4e-

  M) 2H

  N) ADP+Pi

  O) ATP

  P) 2H+

  Q) final electron acceptor

  R) reduced FAD