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41. The antibiotics not having good activity against Enterobacteriaceae is
A. clindamycin
B. cefoxitin
C. trimethoprim-sulphamethoxazole
D. ciprofloxacin
42. Quinones and related antibiotics are
A. tetracyclines
B. actinorhodin
C. mitomycin
D. all of these
43. Both penicillin and fluoroquinolones
A. bind to and inactivate a bacterial protein
B. inhibit the cross-linking of peptidoglycan
C. are inactivated by β-lactamase
D. must be transported into the cytoplasm in order to act
44. A broad-spectrum antibiotic such as chloramphenicol is one that
A. kills both Gram positive and Gram negative bacteria
B. kills all bacteria
C. kills numerous types of microbes
D. kills all microorganisms
45. Vancomycin inhibits peptidoglycan synthesis by binding
A. D-alanyl – D-alanine
B. alanine racemase
C. D-alanyl – D-alanine synthetase
D. amidase
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