1. Lesson 1.3 Microscopic Organisms on Earth
Vocabulary
Lesson 1.3
Microscopic Organisms on Earth

2. Compound Light Microscope

3. Compound Light Microscope
A microscope that uses two or more lenses and a light source to magnify objects

4. Objective Lens

5. Objective Lens
The lens on the bottom of a microscope’s body tube

6. Ocular Lens

7. Ocular Lens
The lens at the top of the microscope’s body tube, nearest the observer’s eye

8. Electron Microscope

9. Electron Microscope
A powerful microscope that uses beams of electrons, rather than a light source, to magnify samples being observed

10. Prokaryotes

11. Prokaryotes
An organism that has a simple cell structure without a nucleus in each cell

12. Eukaryotes

13. Eukaryotes
An organism with a nucleus in each cell

14. Cyanobacteria

15. Cyanobacteria
Prokaryotic producers that produced oxygen as a waste gas that made Earth inhabitable for other living things

16. Protist

17. Protist
A single-celled, eukaryotic organism that cannot be clearly classified as animal or plant

18. Diatoms

19. Diatom
A very small photosynthetic protist that lives in either salt water or fresh water

20. Dinoflagellate

21. Dinoflagellate
A protist that has characteristics of both plants and animals

22. Protozoan

23. Protozoan
A protist that has no cell walls and can find and eat food.

24. Flagella

25. Flagella
Long, hair like structures that whip and lash to help flagellates swim

26. Parasites

27. Parasites
An organism that feeds off and harms other organisms

28. Cilia

29. Cilia
Small, hair like projections extending from the outsides of some protist’s cells used for movement and for capturing food

30. Food Vacuole

31. Food Vacuole
A structure inside certain cells where food is stored

32. Pseudopods

33. Pseudopods
A cell extension used by protist to move about and capture food; means “false foot”

34. Amoeba

35. Amoeba
A protist, found in fresh water, salt water, and soil, that uses pseudopods to move and take in food

36. Created By: Paige Rogers, Carlie McMahon, & Annamarie Rodriguez
The End
Created By: Paige Rogers, Carlie McMahon, & Annamarie Rodriguez