<prompt> Which vitamin is necessary for coA synthesisPantothenic acidAscorbic acidBiotinPyridoxine  <response>: Synthesis of coenzyme A from pantothenate occurs in a series of reactions. Pantothenate is first phosphorylated to which cysteine is added. Decarboxylation, followed by addition of AMP moiety and a phosphate each from ATP results in coenzyme A. Ref : Satyanarayana, 3rd ed, pg- 148 