Penicillin antibiotics were among the first medications to be effective against many bacterial infections caused by staphylococci and streptococci.

The common classification of Staphylococci according to ( ) A: whether produce SPA or not B: different biochemical event and pigments C: K antigen of cell surface D: lactose fermenters

In acute uncomplicated UTI acquired in the community, what is by far<br/>the commonest causative bacterium? () A: coli B: Anaerobic bacteria C: Viruses D: Tubercule bacilli E: Staphylococci

Which one of the following statements about imipenem is MOST accurate? A: The drug has a narrow spectrum of antibacterial action B: It is used in fixed combination with sulbactam C: Imipenem is highly susceptible to b-lactamases produced by Enterobacter species D: In renal dysfunction, dosage reductions are necessary to avoid seizures E: Imipenem is active against methicillin-resistant Staphylococci