1.

The fluoroquinolone resistance seen with increasing frequency in pseudomonas aeruginosa infections is best explained by which of the following mechanisms?

A. Changes in the structure or composition of the cell envelope that make it more difficult for the antibiotic to gain entrance
B. Enzymatic cleavage of the antibiotic molecule
C. Inactivation of the antibiotic by enzymatic acetylation
D. Removal of the antibiotic from the cell interior by a membrane pump
Answer» E.


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