How is O2 bond broken in mitochondrion to be used as a final electron receptor, and turned into 2H2O ?

In cellular respiration, O2 is used as a final electron receptor an turns into 2H2O. To do that, it should be turned into O+O (Not sure). So what is the enzyme or the biophysical process that do...

28 April 2017 9,497 2 View