Toelatingsexamen Tandarts Practice Questions - Toelatingsexamen Tandarts - Flanders Dentistry (tandheelkunde) Bachelor Admission Exam

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Oral epithelial cells keep a steep Na+ gradient. Which process moves Na+ out of the cell against its concentration gradient?

Simple diffusion of Na+ through the phospholipid bilayer Facilitated diffusion of Na+ through a channel down its gradient Active transport by the Na+/K+ pump using ATP Osmosis of water, which drags Na+ with it

Correct Answer:

Active transport by the Na+/K+ pump using ATP

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