Classification And Virus Review Stations Sheet With Answers (Page 4 of 4) in pdf

Station #4: Virus Lysogenic Cycle

Open the video file titled “Lysogenic Cycle Video Clip” to answer the following questions. You may need to pause and rewind if

needed.

Video answers are not given. Watch the videos to find out for yourself.

11. Name the location of the surface of cells where the virus will attach. __________________________________________

12. What happens to the virus DNA once it enters the host cell? _________________________________________________

13. What is the combination of viral and host cell DNA called? _________________________________________________

14. What happens to the provirus when the cell divides? _______________________________________________________

15. What happens when the provirus eventually becomes active? ________________________________________________

Examine the 6 pictures of the lysogenic cycle

picture

16. Which picture is unique to lysogenic viruses and not lytic viruses?

17. In which picture is a provirus created?

18. True or False: During the lysogenic cycle, usually only one infected cell will burst when the virus becomes active.

19. If 1 single cell becomes infected by a lysogenic virus and the subsequent cells divide a total of 8 more times, how many

infected cells will be created?

512

20. Between which two pictures will the provirus remain dormant (for perhaps 10 years)?

Between 1 and 2

c. Between 3 and 4

e. Between 5 and 6

b. Between 2 and 3

d. Between 4 and 5

f. Between 6 and 1

21. Between which two pictures will the host cell multiply and divide by mitosis?

Between 1 and 2

c. Between 3 and 4

e. Between 5 and 6

b. Between 2 and 3

d. Between 4 and 5

f. Between 6 and 1

Open the video file titled “When Does HIV Become AIDS video clip” to answer the following questions. You may need to pause

and rewind if needed.

Video answers are not given. Watch the videos to find out for yourself.

In the USA, how many people will become infected with HIV this year? __________________________________________________

Below what amount of T-cells will a person become diagnosed with AIDS? _______________________________________________

What is the amount of T-cells that a healthy person has? _______________________________________________________________

What are two signs of AIDS? ____________________________________________________________________________________

In general, what are illnesses that don’t usually occur in people with healthy immune systems? ________________________________

Which cancer occurs in lymphocytes (immune system cells)? ___________________________________________________________

Tuberculosis is a bacteria that infects which body part? ________________________________________________________________

What can CMV cause for people who also suffer from HIV? ___________________________________________________________

Which condition is caused by an HIV person losing more than 10% of their body weight? ____________________________________

10. Due to the conditions mentioned in this video means that HIV has progressed to _________________________.

Classification And Virus Review Stations Sheet With Answers Page 4