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

1	The sodium-potassium pump functions to pump
	A)	sodium ions out of the cell and potassium ions into the cell.
	B)	sodium ions into the cell and potassium ions out of the cell.
	C)	sodium and potassium ions into the cell.
	D)	sodium and potassium ions out of the cell.
	E)	sodium and potassium ions in both directions across the cell membrane.
2	What is the source of energy used to power the sodium-potassium pump?
	A)	breakdown of ATP
	B)	formation of ATP
	C)	transport of ATP by the pump
	D)	breakdown of GTP
	E)	transport of GTP by the pump
3	During one cycle, the sodium-potassium pump binds and moves.
	A)	1 Na+ and 2 K+.
	B)	2 Na+ and 2 K+.
	C)	2 Na+ and 3 K+.
	D)	3 Na+ and 2 K+.
	E)	3 Na+ and 3 K+.
4	The sodium-potassium pump is a trans-membrane protein.
	A)	True
	B)	False
5	The binding and release of sodium or potassium ions are due to conformational changes in the protein.
	A)	True
	B)	False