Bacteria and Protists

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Across
  1. 2. chemicals that limit the growth of other bacteria
  2. 4. a thick-walled structure produced by bacteria
  3. 6. changes nitrogen from the air into forms that plants and animals can use
  4. 9. prevents bacterial diseases
  5. 12. one or many celled organism that lives in moist or wet surroundings
  6. 13. the whip-like tails of bacteria that live in moist conditions
  7. 14. use the energy holding molecules of carbon dioxide together and release methane gas as a waste
  8. 15. sphere-shaped bacteria
  9. 17. make their own food using carbon dioxide, water, and energy from sunlight
  10. 18. poisonous substances produced by bacterial pathogens
Down
  1. 1. using organisms to help clean up or remove environmental pollutions
  2. 3. a type of consumer bacteria that helps maintain nature's balance
  3. 5. living cells that carry all the processes of life
  4. 7. an organism that uses oxygen when breaking down food
  5. 8. an organism that is adapted to living without oxygen
  6. 10. a plant-like protist
  7. 11. the characteristics of both plants and animals
  8. 12. any organism that causes disease
  9. 13. a process that produces two new cells with genetic material identical to each other and that of the original
  10. 16. a process of heating food to a temperature that kills most bacteria but causes little change to the taste of food