Business

DR. STEVENSBIOLOGY 112

STUDY QUESTIONS: CHAPTER 27

1.What are viruses?

2.What genetic material(s) are found in viruses?

3.Nearly all viruses form a protein sheath, or _____, around their nucleic acid core.

4.Many animal viruses have an _____ around the capsid that is rich in proteins, lipids and glycoproteins molecules. Give an example.

5.Viruses occur as __________ in every kind of organism that has been investigated for their presence.

6.Which organisms can viruses infect?

7.The suitable cells for a particular virus are collectively referred to as its __________.

8.Define tissue tropism.

9.What does latent mean?

10.When can viruses reproduce?

11.Most viruses have an overall structure that is either _____ or _____.

12.Most animal viruses are _____ in basic structure with _____ facets.

13.What is a bacteriophage? Draw and label a bacterial virus.

14.Viruses show diverse genomes that are composed of ____ or ____ which may be ____ or _____.

15.Be able to name and identify some human viral diseases.

16.Name and distinguish between the two sorts of reproductive cycles in bacterial viruses.

17.The switch from a lysogenic prophage to a lytic cycle is called _____.

18.Define lysis.

19.What is AIDS? Name the virus involved; how does the virus spread; give symptoms of the virus.

20.In AIDS patients, the virus primarily targets _____ and thereby compromises the _____.

21.Describe the infection cycle of HIV.

22.How does HIV recognize a target cell?

23.HIV is a __________ virus that contains __________ RNA. HIV replicates in humans by first making a __________ of itself by using the enzyme __________.

24.Name 5 potential viral targets for therapeutic drugs to combat HIV.

25.Vaccine development for HIV has been very successful. True or False

26.Most lethal virus in human history has been the _____.

27.The greatest problem in combating flu viruses arises not through _____ but through _____.

28.What are emerging viruses?...