Viruses

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Across
  1. 3. epidemic spread over multiple countries
  2. 6. biological preparation
  3. 7. a bacterium virus
  4. 9. rapid spread of disease to a large number of people in a given population within a short period of time
  5. 10. protein shell of a virus
Down
  1. 1. cycleis one of two cycles of viral reproduction
  2. 2. Cycle destruction and infected cell
  3. 4. System complex network of cells, tissues, organs, and the substances
  4. 5. Bacteria are single-celled,or simple, organisms
  5. 8. Have both living and nonliving characteristics