The document provides an overview of cells and how they function. It discusses the cell theory, the discovery of cells, cell structures like membranes and organelles, how cells obtain and use energy through metabolism, and how cells divide through mitosis and meiosis. The key functions and processes of cells such as transport, photosynthesis, respiration, and cell division are summarized.

1. The Living Cell Chapter 21 Great Idea: Life is based on chemistry, and chemistry takes place in cells

3. The Nature and Variety of Cells

6. Cork Cells

8. Light Microscope

9. Electron Microscope

10. Electron Microscope and Photograph

11. How Does a Cell Work?

12. The Cell Is Like a Refinery

14. Membrane Lipid Bilayer

16. The Action of Cell Receptors

17. Plant Cell

18. Plant Cell

20. Nucleus Surrounded by a Double Membrane

21. Terms Related to Cells and Single-Celled Organisms

22. Plant Cell

23. Animal Cell

27. Cytoskeleton

28. Organelles and Their Functions

29. Metabolism: Energy and Life

31. Structure of ATP

33. Photosynthesis

36. Glycolysis

38. Uses of Fermentation

40. Water Vapor Expelled during Respiration

41. Cell Division

43. Mitosis

44. Human Cell Dividing

47. Meiosis

48. Crossing Over