9/15 Chapter 5 HW Viruses and Prions Bridgette Lustyk

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Across
  1. 1. Sometimes viruses contain specific enzymes to help them do this
  2. 7. 20% of this are caused by viruses
  3. 8. Effect of cancer causing viruses on host cells
  4. 9. Most contain double stranded DNA as main genetic material, prominently found in water and sewage.
  5. 12. The first discovery of viruses occurred in these
  6. 14. This range defines the type of cells the virus can effect
  7. 15. Viruses lack this machinery for synthesizing proteins
Down
  1. 2. Type of viral infection that harbors the virus and not immediately destroyed (ex. HIV)
  2. 3. Type of microscope needed to view a virus
  3. 4. A fully formed virus that is able to establish an infection in a host cell
  4. 5. External protein shell
  5. 6. These infect every type of cell
  6. 10. Phase of animal viral replication cycle which is getting into the host cell
  7. 11. Sometimes viruses have this external lipid membrane (same structure as a plasma membrane)
  8. 13. Classification System based on virus’s nucleic acid and how it is produced