Toelatingsexamen Dierenarts Practice Questions - Toelatingsexamen Dierenarts - Flanders Veterinary Medicine (diergeneeskunde) Bachelor Admission Exam

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In a dog’s resting neuron, the Na+/K+ pump maintains the ion gradients used for action potentials. Which description of one cycle of this pump is correct?

Two Na+ ions enter and three K+ ions leave, driven only by facilitated diffusion Three Na+ ions and two K+ ions both enter the cell through a ligand-gated channel Three Na+ ions leave the cell and two K+ ions enter, using ATP hydrolysis Three K+ ions leave the cell and two Na+ ions enter, using ATP hydrolysis

Correct Answer:

Three Na+ ions leave the cell and two K+ ions enter, using ATP hydrolysis

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