A molecular-level-process of spontaneous passive transport of water- soluble molecules across a cell membrane is modeled. The molecules move across cell membranes from an area of higher concentration toward an area of lower concentration via specific transmembrane integral proteins. This transport does not directly require chemical energy from ATP hydrolysis. Which of the following transport mechanisms is most likely mentioned?
- A -
- B Pinocytosis
- C Active transport
- D Facilitated diffusion
- E Osmosis
Правильна відповідь: D. Facilitated diffusion
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