Quiz 2
Hand in your answers as soon as you are done!
1. Where are viruses found?
2. Viruses differ from other cells in three important ways.
a) In order to replicate or reproduce themselves what do they need?
b) How do viruses differ in the type of nucleic acid they contain?
c) What is the third way in which they differ?
3. What are viruses made of?
4. What is the shape of nearly all human viruses?
5. Filoviruses are an exception to the above, what is their shape?
6. HIV-1 is unusual in that it has an envelope surrounding the capsule. What is this envelope made of?
7. When a host is infected the outcome depends upon the viral state.
a) What happens if the virus is in the lytic state?
b) What happens if the virus is in the lysogenic state?
8. What family does the smallpox virus belong to? What is it's scientific
name? The picture to the left is a smallpox patient.
9. When did the last naturally occuring outbreak of smallpox occur?
10. Does the virus exist anywhere today? If so where?
11. What diseases does the Variola virus cause in humans?
12. What therapy is used against these viruses?
13. What kind of virus is this in the diagram to the left?
14. What are the two most famous members of the filoviridae family?
15. Very little is known about Filoviruses. Why is it so difficult for scientists to study them?
16. List at least 6 symptoms which would make you suspect someone has been infected by a Filovirus.
17. Some people do survive, what has been observed among them?
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