Crossword Puzzle

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Across
  1. 5. – Organisms that break down dead organic matter.
  2. 8. – Disease-causing microorganisms.
  3. 9. – Branch of biology that studies algae.
  4. 12. – Small drifting organisms found in aquatic environments.
  5. 13. – Study of the cause of a disease.
  6. 14. – Medicine used to kill or stop the growth of bacteria.
  7. 17. – Theory that life arose from nonliving matter.
  8. 19. – Principle that living organisms come from existing life.
Down
  1. 1. – Instrument used to magnify tiny objects.
  2. 2. – Tiny living organisms visible only with a microscope.
  3. 3. – Scientist who studies microorganisms.
  4. 4. – Branch of microbiology that studies bacteria.
  5. 6. – Organisms that live on or in a host and obtain nutrients from it.
  6. 7. – Microscopic, photosynthetic organisms that drift in water.
  7. 10. – Study of fungi.
  8. 11. vitro – Experiment performed outside a living organism.
  9. 12. dish – Shallow laboratory dish used to culture microbes.
  10. 15. vivo – Experiment performed within a living organism.
  11. 16. – Study of microorganisms.
  12. 18. – Scientific study of living organisms.