<prompt> The chemical used to stop ATP synthesis is?DNSA di nitro salicylic acid2,4 di nitro phenolDDTNo chemical can stop ATP synthesis  <response>: DNSA DNS is used for quantifying carbohydrate levels in the blood. It is mainly used in an assay of alpha-amylase. 2,4-Dinitrophenol DNP is yellow, crystalline solid that has a sweet, musty odour is volatile with steam. It inhibits energy adenosine triphosphate, ATP production in cells with mitochondria. Dichlorodiphenyltrichloroethane, commonly known as DDT, is a colourless, tasteless, and almost odourless crystalline chemical compound, an organochlorine, originally developed as an insecticide is a risk for hepatocellular cancer Ref: Biochemistry by U. Satyanarayana 3rd edition Pgno : 223 