Virus Test Review 2013
Scientists:
1. Who developed the first vaccine?
Edward Jenner
2. Who identified the first virus?
Wendell Stanley
3. What was the first virus identified?
TMV- tobacco mosaic virus
General virus info:
4. What cells do HIV infect?
T – cells (immune cells)
5. Which cycle of viral reproduction does HIV replicate in when a person infected doesn’t show any symptoms?
Lysogenic cycle
6. What does a virus need in order to replicate?
Host cell
7. What is a retrovirus?
Goes from RNA - DNA
8. If a virus contains RNA instead of DNA what type of virus is this?
retrovirus
9. What is a virus that attacks only a bacterial cell?
Bacteriophage
10. List the 3 reasons viruses are not living.
1. Do not grow
2. They can not maintain homeostasis
3. They do not metabolize
Using the figure to the left11. What is the only organism this kind of virus can infect? bacteria
12. What structure stores DNA? head
Head
Collar Collar
Tail Pins
Helical
Sheath
13. What structure is used to anchor it to a host?
pins
14. What is the shape of the structure?
Binal
15. What is an example of this type of virus?
bacteriophage
16. What do cells and viruses have in common?
1. Contain nucleic acid (dna/rna)
2. They contain proteins (capsid)
17. A virus that enters the cell by injecting it’s genetic material, makes copies of itself and then causes the cell to
burst is in which cycle? Draw a picture: (know the steps!) lytic cycle
18. A virus that inserts itself into the cell’s DNA, the cell replicates the viral DNA along with it’s own DNA is in
which cycle? (know the steps) lysogenic cycle
19. List 5 illnesses a virus can cause.
Flu, HIV, cold, tobacco mosaic virus – see below
20. Here are some virus examples - Do any of these viruses have a vaccine
•Adenovirus (common cold)
•Hepatitis A & B
•AIDS
•Avian Bird Flu
•Ebola
•Chickenpox
Influenza (Flu)
Mumps
Smallpox
SARS
Rabies
Polio
Warts
West Nile
Viral Shapes:
19. What is the name of this shape? Helical
20. What does it cause? Tobacco mosaic virus
21. What is the name of this shape? Polyhedral
22. What does it cause? Adenovirus (common cold)
23. What is the name of this shape? Spherical
24. What does it cause? Flu / HIV
25. What is the name of this shape? filovirus
26. What does it cause? ebola
29. What does cell lysis mean? To break / burst
30. If viruses enter the cell and affect the genes that are responsible for controlling the cell cycle, what kind of
disease results? cancer
31. All viruses have what 2 parts? Nucleic acid (dna/rna) , Protein
32. If a virus can not attach to a cell can it cause disease in that cell?
No, it can not inject it’s DNA/RNA if it cannot attach
33. Can viruses perform any metabolic processes?
No
34. What are antibiotics effective against?
Bacterial infections. ---antibiotics do not affect viral infections
35. What determines which kind of cell a virus can target(infect)? Receptor shape
Yes
Do both viruses and cells: have organelles?
Do both viruses and cells: contain genetic material?
Do both viruses and cells: Have identical stages or reproduction?
Do both viruses and cells: Similar stages of life cycles
No
x
x
x
x