Majority of drugs are transported across the membrane by____________?
Correct answer: A. Passive diffusion
- A. Passive diffusion
- B. Active transport
- C. Facilitated trasnsport
- D. Filtration
Explanation
Most drugs cross cell membranes by passive diffusion, moving down their concentration gradient without energy or a carrier. Active and facilitated transport are important for selected drugs, but they account for fewer drugs overall.
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