IAL Biology Topic 6

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Across
  1. 3. phage DNA is incorporated into host cell chromosome
  2. 9. raised body temperature as a response to infection
  3. 11. 2-6 base pair repeated DNA sequences
  4. 12. a differentiated B cell
  5. 15. enzyme that digests part of the structure of peptidoglycan
  6. 17. drug that destroys or prevents the growth of bacteria
  7. 18. microorganism that is not affected by an antibiotic
  8. 21. used, along with a microscope, to count cells
  9. 24. introducing antigens or microbes into an organism to produce artificial active immunity
  10. 25. molecules recognised by the immune system
  11. 26. immunity where protective antibodies are transferred
  12. 28. localised mass of Mycobacterium tuberculosis and macrophages
  13. 29. phase where e.g. bacteria are adapting to a new environment
  14. 30. protein coat of a virus
Down
  1. 1. outer layer of some viruses - from host cell membrane
  2. 2. molecules that stimulate cells from the immune system
  3. 4. study of insects
  4. 5. chemical released by a virally-infected cell and which prevents virus infecting other cells
  5. 6. inhibits the growth of bacteria
  6. 7. released by CD8+ lymphocytes to cause lysis of virus-infected cells
  7. 8. asexual reproduction in bacteria
  8. 10. cell that engulfs and digests other cells or pathogens
  9. 13. thermostable enzyme used in PCR
  10. 14. type of T cell that kills virus-infected cells
  11. 16. organism that causes disease
  12. 19. part of the non-specific response to infection - blood vessel dilation and swelling
  13. 20. temporary muscle contraction following death
  14. 22. RNA virus that replicates via a DNA intermediate molecule
  15. 23. oily antimicrobial substance produced by the skin
  16. 27. free from any microbial contamination