Chapter 21 Crossword

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