This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Which of the following actions are caused by 2-4-diinitrophenol? 
Select and explain. 
A. Inhibition of ATP synthase, B. Inhibition of electron transpo, C. Uncoupling of oxidation and phosphorylation, D. Accumulation of ATP
C: Uncoupling of oxidation and phosphorylation
Answer: C: Uncoupling of oxidation and phosphorylation 
Explanation: 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: Harper's Illustrated Biochemistry 27th/107; Biochemistry 3E By S C Rastogi, 2010, Page 224.