<prompt> Combination of amoxicillin with clavulanic acid is active against all the following organisms exceptMRSAPencillinase producing staph aureusPencillinase producing N.gonorrheaBeta lactamase producing E. Coli  <response>: MRSA occurs due to altered Pencillin binding proteins There fore cannot be replaced by beta lactamase inhibitor like clavulanic acid Refer GG 1497 