Respiratory Chain or Electron Transport Chain скачать в хорошем качестве

Respiratory Chain or Electron Transport Chain

The electron transport chain involves the sequential passive transfer of electrons from electron carriers NADH and FADH2 to oxygen molecule. It occurs in mitochondrial matrix. The electrons always move passively from low reduction potential to high reduction potential. The oxygen is the having the highest reduction potential and hence acts as final electron acceptor in mitochondria. The passive movement of electrons releases energy, that is used by some mitochondrial enzymes to actively transfer H+ ions from matrix to inter-membrane space (matrix has less H+ ion concentration than that of inter-membrane space). The protons (H+ ions) return to matrix passively through ATPase and phosphate translocase. This passive return of protons releases energy that is used by the enzyme ATPase or ATP synthase to make ATP from ADP and inorganic phosphate which is called oxydative phosphorylation.