oxidative phosphorylation

• step 1

  NADH is reoxidised forming NAD and H atom

  H is split to form 2H+ and 2 electron
• step 2

  electron is accepted by first electron transport chain

  moves through ETC by a series of redox reactions

  as they move energy is released
• step 3

  the energy released by ETC is used to pump H+ into the inner membrane space by active transport

  this builds up a steep proton gradient across the inner membrane
• step 4

  H+ move back into the matrix through ATP synthase by facilitated diffusion

  (proton motive force)
• step 5

  energy formed by the movement of H+ back into the matrix allows ADP and Pi to form ATP
• step 6

  oxygen accepts electrons in ETC to combine with H+ to form water