Three classmates from microbiology class are talking about drug resistance. They each disagree about the definition of the term so they state his or her definition and give a justification. Compare the various definitions and justifications below and pick the one that is most accurate.
A. The bacterium has changed physically or chemically in some way to be able to destroy the drug or avoid its action, allowing it to grow unimpeded by the drug.
B. The person becomes resistant to the drug; the body adjusts to the dosage of the chemical and no longer responds to its action.
C. The drug is changed in the body and is inactivated physically and chemically so it no longer works properly against the bacterium.
D. The bacterium becomes immune to the drug; the drug no longer kills or inhibits the bacterium.
Answer: A
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