<prompt> Which of the following actions are caused by 2-4-diinitrophenol?Inhibition of ATP synthaseInhibition of electron transpoUncoupling of oxidation and phosphorylationAccumulation of ATP  <response>: 2,4-dinitrophenol and valinomycin are two uncouplers which inhibit oxidative phosphorylation. 2,4-dinitrophenol is a potent uncoupler even in low concentrations by dissolving itself in the bi-lipid core of the inner cell membrane. Ref: Harpers Illustrated Biochemistry 27th107; Biochemistry 3E By S C Rastogi, 2010, Page 224. 