Chapt 5

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Across
  1. 1. discovered how HIV infects cells to cause aids
  2. 4. based on a virus' nucleic acid and how it is produced
  3. 9. Are obligate intracellular parasites (cannot multiply unless they invade specific host cell)
  4. 10. What microscope is needed to view a virus
  5. 12. Viruses that can cause cancer (HIV,HPV,HCV,EBV)
  6. 13. Viruses have an external lipid membrane that contains proteins allowing viruses to attach to cells called
  7. 17. Either DNA or RNA, not both
  8. 18. Resistant to HIV(makes CCR5 receptor absent)
  9. 19. external protein shell
  10. 20. Infect cells and influence their genetic makeup
Down
  1. 2. Virus that attacks and destroys targeted bacteria
  2. 3. uses reverse transcriptase to replicate because the host cell doesn't have it.
  3. 5. Cause approx. 20% of cancers
  4. 6. When bacteriophages infect, but remain dormant, not destroying the target cell
  5. 7. Defines the types of cells a virus can infect
  6. 8. Virus-like agents that affect plants(composed of naked strands of RNA)
  7. 11. Chronic viral lifelong infection
  8. 14. Areas where virus-infected cells have been destroyed
  9. 15. Received bone marrow transplant from donor with CCR5Δ32 mutation and was "cured" of the virus 600 days later
  10. 16. The first discovery of viruses occurred in
  11. 20. A fully formed virus that is able to establish infection in a host cell