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Not to be confused with phosphate soda or phosphonate. A phosphate (PO3â. 4) is an inorganic chemical and a salt of phosphoric acid. In organic chemistry, a phosphate, or organophosphate, is an ester of phosphoric acid. Of the various phosphoric acids and phosphates, organic phosphates are important in biochemistry and biogeochemistry (ecology), and inorganic phosphates are mined to obtain phosphorus for use in agriculture and industry.
In chemical reactions, the phosphate group will attach to one reactant, giving it energy and allowing it to react with a second atom or molecule. A product is made through that chemical work. All these types of cellular work require ATP. The phosphate group is released after the work is done.