Pseudomonas aeruginosa is one of the most notoriously resistant pathogens. Which of the following mechanisms does this bacteria use to evade antimicrobials?
A) target alterations
B) reduced permeability
C) efflux pumps
D) drug inactivation
E) This bacteria uses all of the possible ways to evade antimicrobials, which is why it is so good at it.
Answer: C
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A pharmaceutical company hires a chemist to analyze the purity of the water being used in its drug preparations. If the water is pure, the chemist would expect to find
A) only molecules of H2O. B) only H2O molecules and H+ ions. C) H2O molecules, H+ ions, and OH- ions. D) only H+ ions and OH- ions.