Cells generate ATP from extracellular electron transfer. Normal respiration leads to an electron flow, which is then used to pump protons outside the cell, and reduce an electron acceptor such as oxygen. the only difference when extracellular electron transfer is happening is that the electrons travel further through the outer membrane and on to the solid state electron acceptor.

The anode accept the electron from external acceptors

Hi, i have this question in mind too. 
to my knowledge (not very reliable) , all living cells produce ATP but the way may be different: aerobic -->citric acid cycle (krebs cycle) and anaerobic --> lactic or alcoholic fermentation 
And as a cell exchanges elements with its environment through its membrane there are also proton exchanges to regulate intracellular pH. 
But how does it work when we take electrons and protons from the bacteria environnement?

Only registered users can write a comment.
Please login or register.