<prompt> What enzyme is inhibited by etoposide ?Topoisomerase ITopoismerase IIDihydrofolate reductaseDihydro orotate oxidase  <response>: Ans. is b i.e., TopoisomeraseRef: KDT 7he p. 8661EtoposideSemisynthetic derivative of podophyllotoxin, a plant glycosideNot a mitotic inhibitor, but arrests cells in the G2 phase and causes DNA breaks by affecting DNA topoisomerase-2 function. 