Movement into and out of cells — practice question

What accounts for the effect on a red blood cell when it is placed in pure water?

• ALess water leaves the cell than enters it, so the cell shrinks.
• BMore water enters the cell than leaves it, so the cell swells and bursts.
• CWater enters the cell and none leaves it, so the cell swells and bursts.
• DWater enters the cell and more leaves it, so the cell shrinks.