1. These are bacteria that transform energy from sunlight into energy that can be used by cells

2. Producers

3. These are the cells that viruses infect in order to make copies

4. Host cells

5. These organisms drift in water instead of swimming through it.

6. plankton

7. These get energy by breaking down the chemicals in dead or decaying organisms and recycling them.

9. These are animal-like protist that get their energy
These are animal-like protist that get their energy. By eating other organisms, or decaying parts of other organisms.

10. Protozoa

11. These organisms are able to live in harsh, extreme environments.

12. Archaea

13. This name applies to both multi-cellular protist and single-celled protist that contain chlorophyll and use sunlight as an energy source.

14. Algae

15. These live in very close relationships either inside or on the surface of other organisms.

16. Parasites

17. These can only be seen with the aid of a microscope.

18. Microorganisms

19. Single-celled organisms reproduce by this process.

20. Binary fission

21. This is a small collection of genetic material enclosed in a protein shell.

22. Virus

23. These life forms are the simplest kind of life known on Earth

24. Bacteria

25. Scientists divide the organisms they identify into these groups.

26. Kingdoms

27. Single-celled organisms that live in deep sea vents or beneath ice belong to this group.

28. Archaea

29. Some of these organisms harm their hosts while others are helpful to their hosts or do not affect them.

30. Parasites

31. These protists are producers and contain chlorophyll

32. Algae

33. These bacteria break down dead matter for use by other organisms.

34. Decomposers

35. These bacteria are a food source for organisms that cannot make their own food.

36. Producers

37. Examples of this are the paramecium and the amoeba.

38. Protozoa

39. In this material from one cell is broken apart into two cells.

40. Binary Fission

41. Some of these are made of just one cell.

42. Microoganisms

43. Some viruses use these as a factory that produces new viruses.

44. Host cells