<prompt> Which of the following drug acts at 50s ribosome:StremptomycinTetracyclineQuinpristinDemeclocycline  <response>: Ref: Sharma Sharma 3rd ed. P 702Protein synthesis inhibitor drugs acting at 30s and 50s ribosomal unitDrugs acting by inhibiting 30s ribosomeAminoglycoside Streptomycin,Gentamicin, Tobramycin, Kanamycin, AmikacinTetracycline Minocycline, Demeclocyclin, DoxycyclineDrugs acting by inhibiting 50s ribosomeStreptogramins Quinpristin DalfopristinErythromycin macrolidesLincosamides ClindamycinLinezolidKetolides Telithromycin, Cethromycin ChloramphenicolMn: Buy AT 30, SELL Karo China in 50 