Chapter 21 Crossword

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Across
  1. 5. – hair-like structures used for attachment
  2. 6. – virus that uses RNA to make DNA
  3. 7. – material in bacterial cell walls
  4. 8. – protein coat that protects a virus
  5. 12. – thread-like structures in fungi
  6. 13. – long whip-like structure used for movement
  7. 15. – cycle where viral DNA hides in the host
  8. 18. – change in DNA
  9. 19. – single-celled organisms that live in extreme environments
  10. 20. – parasitic protist that can cause malaria
Down
  1. 1. – organism that breaks down dead matter
  2. 2. – tiny hair-like structures used for movement
  3. 3. – illnesses caused by viruses
  4. 4. – cycle where a virus destroys the host cell
  5. 9. – reproductive cell of fungi
  6. 10. – single-celled or simple organism that is not a plant, animal, or fungus
  7. 11. – single-celled fungus used in baking
  8. 14. – plant-like protists that do photosynthesis
  9. 16. – tough material in fungal cell walls
  10. 17. – process where bacteria split into two cells