Objectives: The Viruses 1. Explain why viruses are described as obligate intracellular parasites .Unlike all other living organisms viruses lack the...

Objectives: The Viruses

1.  Explain why viruses are described as obligate intracellular parasites.

2. Unlike all other living organisms viruses lack the ability to acquire _____, or use _______.

3. Discuss some of the reasons why scientists continue to debate whether or not viruses should be

    considered living or nonliving organisms. 

4. Name the two parts all viruses will possess and identify them in a picture.

5. Some viruses have an additional envelope with spikes. Identify an envelope with spikes in a picture

     and explain their importance to the virus. 

6. Viruses are host specific meaning they will can only infect and replicate inside of specific cells. 

    Describe how this specificity works like a lock-and-key. 

7. Define bacteriophage and recognize the unique shape in a picture.

8.  Discuss how a lysogenic cycle differs from a lytic cycle.

9 . Describe where the virus is found during the latent stage of a lysogenic cycle. 

10. Label and describe the reproductive cycle of the HIV virus (example of animal virus reproduction).

11. Explain how the animal virus entry into the host cell DIFFERS from that of a bacteriophage.

12. List other examples (other than HIV) of animal viruses that infect human cells and become latent.

13. Define emerging virus and discuss the ways they emerge.  

14. Explain how humans can control viral diseases.