Oxidative Phosphorylation

a.  DNP will collapse the electrochemical proton gradient completely.  Protons pumped across the inner membrane will be carried back across the membrane by DNP, therefore no energy can be stored across the membrane. 

b.  K+ ions will be driven into the matrix by the electrical potential of the inner membrane (negative inside, positive outside).  The influx of positively charges K+ ions will abolish the membrane's electrical potential without affecting the concentration component of the proton gradient (the pH difference).  As a result, only part of the driving force that makes it energetically favorable for protons to flow back into the matrix will be lost.

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