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

1	Which viral receptor is involved in HIV attachment to the host cell?
	A)	gp41
	B)	gp120
	C)	p24
	D)	p17
	E)	all of the above
2	In order for HIV to attach, the host cell must have
	A)	a CD4 antigen receptor and a cell specific co-receptor
	B)	a gp120 receptor
	C)	a CD4 receptor and a nonspecific universal receptor
	D)	a CD8 receptor and a specific co-receptor
3	Protease enzyme
	A)	makes DNA from single-stranded RNA
	B)	integrates viral DNA into host genome
	C)	cleaves poly-protein into individual functional viral proteins
	D)	helps the virus attach to the host cell
4	HIV core contains gp120 and gp41.
	A)	True
	B)	False
5	When viral DNA is integrated into the host cell chromosome, it is called proviral DNA or a provirus.
	A)	True
	B)	False