Electrons in electron transpo chain travel from:
Electrons in electron transpo chain travel from low redox potential to high redox potential. Redox potential is the tendency to gain electrons. In ETC, NADH has minimum R.P. (a Strong Electron Donor) and oxygen(O2)has maximum R.P. (a Strong Electron Acceptor).
One way irrespective of the potential
Low to high potential
Two way
High to low potential
ETC