View the animation below, then complete the quiz to test your knowledge of the concept.

1	Osmosis is best defined as the movement of
	A)	molecules from an area of high concentration to an area of lower concentration.
	B)	molecules from an area of low concentration to an area of higher concentration.
	C)	water molecules across a membrane from an area of low water to an area of higher concentration.
	D)	water molecules across a membrane from an area of high water concentration to an area of lower concentration.
	E)	water molecules inside a container.
2	Which of the following will pass through a cell membrane most easily?
	A)	small polar molecules
	B)	small nonpolar molecules
	C)	large polar molecules
	D)	large nonpolar molecules
	E)	large neutral molecules
3	A red blood cell placed in a hypertonic medium will
	A)	expand.
	B)	burst.
	C)	shrink.
	D)	have no change in shape.
	E)	become a white blood cell.
4	A 5% urea solution is hypotonic to a 10% urea solution.
	A)	True
	B)	False
5	If a cell is placed in an isotonic medium, there will be no net movement of water.
	A)	True
	B)	False