Cell theory states that all living things are composed of cells, cells are the basic unit of structure and function, and new cells are produced from existing cells. Cells can be classified as prokaryotic, which lack organelles and a nucleus, or eukaryotic, which contain organelles and a nucleus. Eukaryotic cells can be single-celled or multi-cellular, and multi-cellular organisms contain specialized cells that perform distinct functions like transport, storage, photosynthesis, and more.

1. Cell Theory & Types of Cells

2. Cell Theory All living things are made up of one or more cells and their products

3. Cell Theory The cell is the simplest unit that can carry out all life processes.

4. Cell Theory All cells come from other cells; they do not come from non-living matter

5. Classification of Cells

6. Prokaryotic Cells simple, unicellular organisms (e.g. archaea and bacteria) no cell nucleus no membrane-bound organelles

7. Prokaryotic Cells archaea e. coli bacteria

8. Eukaryotic Cells much larger than prokaryotic cells contain a nucleus and other membrane-bound organelles includes all protists, fungi, animals, and plants

9. Single-Celled Eukaryotes amoeba

10. Single-Celled Eukaryotes

11. Single-Celled Eukaryotes

12. Multi-cellular Organisms Multi-cellular eukaryotes can be further classified into plant cells and animal cells plant cell animal cell

13. Plant Cells

14. Plant Cells

15. Animal Cells

16. Specialized Cells Eukaryotic organisms:

17. Specialized Cells Complex organisms contain many different types of cells that perform different functions Specialized cells have physical and chemical differences that allow them to perform one job very well

18. Specialized Plant Cells:transport cells (xylem & phloem)

19. Specialized Plant Cells:storage cells (amyloplasts)

20. Specialized Plant Cells:photosynthetic cells (contain many chloroplasts)

21. Specialized Plant Cells:root cells (epidermal)

22. Specialized Plant Cells:guard cells (stomata)

23. Specialized Animal Cells:Blood cells

24. Specialized Animal Cells:Skin cells

25. Specialized Animal Cells:Bone cells

26. Specialized Animal Cells:Muscle cells

27. Specialized Animal Cells:Gamete cells (sperm & egg)

28. Specialized Animal Cells:Fat cells

29. Specialized Animal Cells:Nerve cells (neurons)

30. Specialized Animal Cells:Rods & cones

31. Specialized Animal Cells:Lung cells