7th grade Ch.7 Test

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Across
  1. 3. process that viruses use to copy thamselves
  2. 4. cause illness when released by bacteria
  3. 6. virus that is inactive inside a cell
  4. 8. thick wall around a bacterium's chromosome and some of its cytoplasm
  5. 9. produced with the help of bacteria
  6. 11. occurs when an antibiotic is no longer effective against a type of bacteria
Down
  1. 1. process in which food is heated to a temperature that kills most harmful bacteria
  2. 2. caused by eating food contaminated by certain bacteria
  3. 5. bacteria that can live without oxygen
  4. 7. living cell infected with a virus
  5. 10. conversion of nitrogen into a form that plants can use
  6. 12. disease caused by viruses