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Assignment 5: HIV and AIDS (20 points)

  1. What is the difference between innate and acquired immunity?
  2. Give a few examples of innate immunities.
  3. What is the difference between cell-mediated and antibody-mediated immunity?
  4. What is the purpose of NK cells?
  5. Why are helper T-cells so important to both cell-mediated and Ab-mediated immunity?
  6. What are antibodies and how do they work?
  7. How do T-cells work?
  8. Why can you acquire resistance to some pathogens but not to others?
  9. What causes AIDS?
  10. Describe the lifecycle of HIV.
  11. Describe the disease progress of AIDS.
  12. What is meant by the latent period of infection of AIDS?
  13. Describe some current treatment methods of AIDS.
  14. Why does infection with HIV-2 seem to protect against infection with HIV-1.
  15. What is the difference between HIV-1 and HIV-2