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Antimicrobial Chemotherapeutic Agents

Antimicrobial Chemotherapeutic Agents
The mode of action of polymyxin is to

inhibit protein synthesis
injury to the plasma membrane
inhibit DNA synthesis
inhibit folic acid synthesis

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Antimicrobial Chemotherapeutic Agents
Which of the following protein synthesis mechanisms may be affected by particular drugs?

mRNA translocation
Aminoacyl-tRNA binding
All of these
Peptide bond formation

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Antimicrobial Chemotherapeutic Agents
Fluoroquinolones are antibiotics which inhibit

DNA polymerase
RNA polymerase
Cross-linking of peptidoglycan
DNA gyrase

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Antimicrobial Chemotherapeutic Agents
The scientist who first discovered the substance penicillin was

Paul Ehrlich
Joseph Lister
none of these
Alexander Fleming

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Antimicrobial Chemotherapeutic Agents
The penicillin resistant to β-lactamases is

penicillin-G
closacillin
carbenicillin
ampicillin

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Antimicrobial Chemotherapeutic Agents
Novobiocin can be used against

all of these
gram +ve Staphylococci
gram -ve Meningococci & Gonococci
Haemophilus

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