You have constructed phospholipid vesicles that contain Na+/K+ pumps as the sole

Question

You have constructed phospholipid vesicles that contain Na+/K+ pumps as the sole membrane protein. The portion of the pump that normally faces the cytosol is oriented towards the outside of the vesicles. The solutions inside the vesicles and outside the vesicles have both Na+ and Kt ions, but NO ATP is present either inside or outside of the vesicle. What would happen? O ANa+ would move into the vesicle repeatedly and K+ would move out of the vesicle repeatedly. O B +would move into the vesicle repeatedly and Na+ would move out of the vesicle repeatedly. O C No Na+ or K+ would move into or out of the vesicles. O D A small amount of Na+ would move into the vesicle during a single partial cycle of each pump

Explanation / Answer

The correct answer is option C that is no Na+ or would move into or out of the vesicles because as the ATP is not present then there will be no ATPase action from the pump and without that no movement of ion is possible neither inside nor outside.

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