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BMS 212 exam 2 mastering questions chapter 10

Terms in this set (7)

A patient has been diagnosed with a disease caused by a drug-resistant strain of bacteria. What is a likely way that the bacterium initially acquired resistance?
mutation
A patient is infected with a bacterium that produces the enzyme beta-lactamase; this enzyme:
inactivates penicillins, carbapenems, and cephalosporins
Which of the following does not spread drug resistance throughout a population of bacteria?
efflux pumps
A particular drug works by interfering with cellular metabolism in Gram-negative bacteria. How might these bacteria become resistant in a way that Gram-positive bacteria never could?
Alter porin proteins in the cell's outer membrane
The first true antibiotic was __________, which was discovered by __________.
penicillin; Alexander Fleming
Which of the following is a primary advantage of semisynthetic drugs?
They are more effective than the unmodified natural antibiotics.
Polymyxin is effective against only some Gram-negative bacteria; therefore, it is considered a __________.
narrow-spectrum drug
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