As 18 Na⁺ ions are exported out of the cell by the Na⁺-K⁺ ATPase membrane transport protein,__________ K⁺ ions are imported into the cell. A) 2 B) 12 C) 18 D) 24

Question

Quizplus · Accepted Answer

The Na⁺-K⁺ ATPase membrane transport protein exports 18 Na⁺ ions out of the cell. This protein works by exchanging Na⁺ ions with K⁺ ions in a 3:2 ratio. Therefore, for every 3 Na⁺ ions moved out of the cell, 2 K⁺ ions will be moved into the cell. Thus, 18/3 x 2 = 12 K⁺ ions will be imported into the cell.

As 18 Na+ Ions Are Exported Out of the Cell

As 18 Na⁺ Ions Are Exported Out of the Cell