Download Virus Worksheet for 28.1 11th edition KEY

Biology 11
Viruses
1. Are viruses composed of cells?
2. What is meant by the term obligate parasite?
3. What is an argument given by scientists that viruses are not alive?
4. What is an argument given by scientists that viruses are alive?
5. Define viroids:
6. Define prions:
7. Which are bigger; viruses or bacteria? What size is each of them?
8. What shapes might viruses be found in?
9. The structure of viruses is made up of two parts, what are they?
10. In animal viruses, what is the capsid surrounded by, how is it
formed?
11. What role do spikes play for viruses?
12. Are viruses specific to a particular host? What types of host?
13. What does it mean when a virus becomes latent? What term is
used to describe a latent virus?
14. What happens during latency?
15. Define a retrovirus:
16. Give an example of a retrovirus?
3. Match the following virus with its host:
_________ a. bacteriophage
1. mammals
_________ b. tobacco mosaic virus
2. liver cells
_________ c. rabies virus
3. plants
_________ d. human immunodeficiency virus
4. nerve cells
_________ e. polio
5. blood cells
_________ f. hepatitus
6. bacteria