Ch. 12 Review

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Across
  1. 2. – process where bacteria take DNA from the environment
  2. 3. – organisms without a nucleus
  3. 4. – protein coat surrounding viral genetic material
  4. 6. Division – process during which viral DNA is copied in the lysogenic cycle
  5. 8. – organisms that live in very salty environments
  6. 9. – region where bacterial DNA is located
  7. 12. – organisms that prefer acidic environments
  8. 13. – small infectious agent that requires a host
  9. 15. – prokaryotes commonly found in extreme environments
  10. 17. – one of the two main types of prokaryotes
  11. 21. – archaea that produce methane in low-oxygen environments
  12. 22. – outer covering found on some viruses
  13. 23. – infectious particle made only of protein
  14. 24. – structures viruses use to attach to cells
  15. 25. – small circular DNA molecule in bacteria
  16. 26. – organisms that thrive in extremely hot environments
Down
  1. 1. – structure bacteria use for movement
  2. 3. – molecule found in bacterial cell walls
  3. 5. – DNA transfer between bacteria by viruses
  4. 7. – virus that inserts RNA into host DNA
  5. 10. – viral cycle where viral DNA integrates into host DNA
  6. 11. – DNA transfer between bacteria through a pilus
  7. 14. – protective outer layer of some bacteria
  8. 16. – organism that causes disease
  9. 18. – organ commonly affected by prion diseases
  10. 19. – role many bacteria play in breaking down organic matter
  11. 20. – virus that infects bacteria
  12. 21. – DNA of microbes living in and on an organism