in the presence of oxygen and in the absence of ADP, what occurs if the uncoupler 2,5 dinitrophenol is added to a suspension ofnormal

Oxidation Occurs after the addition of the uncoupler 2,5 dinitrophenol

Explanation:

The chemical compound that is Dinitrophenol (DNP). The compound has the chemical formula of HOC6H3(NO2)2. The compound helps during Adenosine triphosphate synthesis by making sure that there is enough hydrogen ion for the synthesis.  

Therefore, if the " presence of oxygen and in the absence of ADP". Thus,  When the uncoupler 2,4-dinitrophenol is added to a suspension of normal mitochondria five minutes after an oxidizable substrate has been added, there is going to be OXIDATION ON THE SUBSTRATE AFTER THE ADDITION WHICH IS GOING TO BE RAPID AFTER SOME TIME.

i think it's letter a.