Biology Test 2 Review_ Viruses.txt

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Author:
Shalamkm
ID:
143736
Filename:
Biology Test 2 Review_ Viruses.txt
Updated:
2012-03-25 18:17:55
Tags:
Viruses
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Description:
Viruses
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  1. Why are viruses considered non- living?
    They are considered non- living because they can only reproduce when they invade a host cell

  2. Be able to identify the three shaped viruses.
    Bacteriophage
  3. Polyhedron
  4. Rod

  5. Diagram the structure of a virus and label.
    • 1. Enzyme
    • 2. Cell Membrane
    • 3. Capsid
  6. What is a retrovirus?
    Retroviruses are RNA viruses
  7. What is the order of the lytic life cycle?
    • 1. Attachment to cell
    • 2. Penetration
    • 3. Synthesis of protein- transcription, translation, and then make viral proteins.
    • 4. Assembly of the virus
    • 5. Release from the host cell either by- lysis (fever blisters) or budding (HIV)
    • 6. Virions- newly released viruses existing outside the cell ready to invade other cells
  8. What is the difference between lyric and lysogenic life cycle?
    In the lysogenic life cycle the virus attached to host chromosomes and gets duplicated every time the host cell divided.
  9. How do viruses harm cells?
    Viruses cause cell and tissue destruction. Some viruses trigger cancer. They destroy cell function
  10. Why are anti- virus drugs difficult to develop?
    Anti- virus drugs are difficult because viral proteins mutate rapidly. The virus is located inside the cell
  11. Be able to recognize viral diseases from the list given in the class notes.
    Be able to recognize viral diseases from the list given in the class notes.
  12. Measles
    Viral
  13. AIDS
    Viral
  14. Chicken Pox and shingles
    Viral
  15. small pox
    viral
  16. herpes simplex 1- fever blisters
    viral
  17. herpes simplex 2- genital herpes- incurable
    viral
  18. influenza
    viral
  19. cold
    viral
  20. mumps
    viral
  21. poliomyelitis
    viral
  22. rabies
    viral
  23. infectious momonucleosis
    viral
  24. viral pneumonia
    viral
  25. hepatitis
    viral
  26. warts
    viral
  27. west nile
    viral

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