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

1	The enzyme that unwinds a segment of the DNA molecule is...
	A)	DNA polymerase.
	B)	DNA ligase.
	C)	RNA primase.
	D)	DNA polymerase III.
	E)	helicase.
2	The enzyme that travels along the leading strand assembling new nucleotides on a growing new strand of DNA is...
	A)	DNA polymerase.
	B)	DNA ligase.
	C)	RNA primase.
	D)	DNA polymerase III.
	E)	helicase.
3	Before the lagging strand can begin assembling new DNA nucleotides, which of the following must occur?
	A)	DNA polymerase III adds deoxyribonucleotides.
	B)	DNA polymerase I removes some material and replaces it with DNA.
	C)	OH bonds must be broken between the two strands of DNA.
	D)	DNA ligase forms a phosphodiester bond between the 3' OH of the growing strand and the 5' phosphate in front of it.
	E)	RNA primase constructs a short RNA primer.
4	During DNA replication, the lagging strand is synthesized continuously, while the leading strand is synthesized discontinuously.
	A)	True
	B)	False
5	Before DNA replication can occur, the OH bonds between the strands must be broken.
	A)	True
	B)	False