Pumping a drug back out before it reaches its target is resistance by:
AEnzyme
BExcision
CExtension
DEfflux
Answer & Solution
Correct answer: D. Efflux
1. The drug never accumulates inside the cell.
2. Transport proteins remove it again.
3. That mechanism is efflux.
_Source: OpenStax Microbiology, Chapter 14, Antimicrobial Drugs._
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