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Old 04-20-2010
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Question Ciprofloxacin mechanism of action

A 30-year-old female presents to her primary care physician with complaints of frequency, urgency, and dysuria over the last twelve hours. Urinalysis reveals many leukocytes. She is treated with a three-day course of oral ciprofloxacin. What is the primary target of the antimicrobial action of ciprofloxacin?

A. Binding of the 30S subunit
B. Binding of the 50S subunit
C. Competitive inhibition of dihydrofolate reductase
D. Inhibition of DNA-dependent RNA polymerase
E. Inhibition of DNA gyrase
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Old 04-20-2010
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Default Answer is E

Cirpo is classified as a broad-spectrum antibiotic under the Fluorochloroquine family. It acts by blocking DNA Gyrase= no cell division.
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Old 04-21-2010
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E. inhibition of DNA Gyrase..
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Old 04-21-2010
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yes ans. is E . inhibiton of DNA gyrase
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