oxidative phosphorylation

• 1.hydrogen atoms are released from reduced NAD and reduced FAD as theyre oxidised to NAD and FAD- hydrogen atoms are split into H+(protons) and E-(electrons)

  2.electrons move down ETC(made of electron carriers)-losing energy at each carrier(redox reactions)

  3. this energy is used by electron carriers to pump H+ from mitochondrial matrix to intermembrane space

  4. conc of protons how higher in intermembrane space than matrix=electrochemical gradient
• 5.protons move down electrochemical gradient, back to the matrix, this movement drives synthesis of ATP from ADP+PI by ATPsynthase

  6.movement of H+ ions across membrane(which generates ATP) called chemiosmosis

  7. at the end of the ETC, in the matrix, h+ protons and electrons and 02(from blood) combine to form water
• occurs in the inner mitchondrial membrane(cristae) where the electron transport chain is located