communicable diseases

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Across
  1. 2. liquid faeces.
  2. 3. a protein produced by the immune system that attacks foreign organisms.
  3. 5. a protein on the surface of a substance that triggers and immune response
  4. 8. the use of chemicals to treat cancer.
  5. 10. tiny hair-like projections from a cell that allows substances to move past the cell.
  6. 11. slimy white protein, lining the respiratory tract and alimentary canal.
  7. 14. controls what happens inside a cell.
  8. 15. single-celled microorganism.
  9. 16. often fatal disease caused by a virus in Africa.
  10. 17. Human Immunodeficiency Virus. Disease which damages the immune system.
  11. 18. the organism lived in by a parasite.
  12. 19. green or yellow pus from an infection.
Down
  1. 1. where photosynthesis occurs.
  2. 4. speeds up a chemical reaction.
  3. 6. infectious disease of the respiratory system.
  4. 7. fatal disease spread by mosquitos.
  5. 9. substance that stops the reproduction of bacteria.
  6. 12. inside a nucleus carrying genetic information of the living being.
  7. 13. a large group of eukaryotic organisms.