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Antimicrobial Chemotherapeutic Agents

Antimicrobial Chemotherapeutic Agents
Which of the following is used only in life-threatening situations when no other drug is adequate?

Streptomycin
Tetracycline
Penicillin
Chloramphenicol

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Antimicrobial Chemotherapeutic Agents
Most antibiotics are isolated from

plants
viruses
aquatic microorganisms
soil microorganisms

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Antimicrobial Chemotherapeutic Agents
Which of the following group is not the carbohydrate containing antibiotic?

Streptomycin & Streptothricin
Everninomycin & Nogirimycin
Erythromycin & candicidin
Vancomycin & Moenomycin

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Antimicrobial Chemotherapeutic Agents
Which of the following may cause resistance to penicillin?

Production of β-lactamases by bacteria
Alteration or lack of penicillin-binding proteins
All of these
Impermeability of cell envelope

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Antimicrobial Chemotherapeutic Agents
Interference mechanism of ciprofloxacin and norfloxacin is due to their action on

protein synthesis
DNA function
cell wall synthesis
cell membrane function

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Antimicrobial Chemotherapeutic Agents
The antibiotics which affords a broad spectrum of antimicrobial coverage against aerobic and anaerobic bacteria, rickettsiae, chlamydiae, and mycoplasmas is

tetracycline
vancomycin
gentamicin
metronidazole

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