1. Cell Structure & Function http://koning.ecsu.ctstateu.edu/cell/cell.html

2. Definition of Cell A cell is the smallest unit that is capable of performing life functions. Shape = Function Nerve cell: Skin Cell: White blood cell:

3. Two Types of Cells Prokaryotic – do not have membrane bound organelles (Unicellular) - no nucleus ex) bacteria Eukaryotic – contain membrane bound organelles (Multicellular) - HAS a nucleus ex) plant and animal cell

4. Prokaryotic Do not have structures surrounded by membranes Few internal structures One-celled organisms, Bacteria http://library.thinkquest.org/C004535/prokaryotic_cells.html

5. Eukaryotic Contain organelles surrounded by membranes Most living organisms PlantAnimal http://library.thinkquest.org/C004535/eukaryotic_cells.html

6. Examples of Cells Amoeba Proteus Plant Stem Red Blood Cell Nerve Cell Bacteria

7. Cell Parts Organelles

8. Cell Membrane Structure “what it looks like” Phospholipid bilayer

9. Functions of the Cell Membrane 1.Keeps things in 2.Keeps things out 3.Regulates what passes through * nutrients and food * gases * water

10. Location of cell membrane Found in plant AND animal cells

11. Ribosomes

12. Function of Ribosomes Site of protein synthesis Made up of RNA Attached to ER (making proteins for another cell) Floating freely (making proteins for THAT cell)

13. Location of Ribosomes Found in plant AND animal cell

14. Nucleus

15. DNA and RNA are made Nuclear Pores – holes in the nuclear envelope which allow things to enter and leave the nucleus

16. Location of Nucleus Found in plant AND animal cell

17. Nucleolus

18. Center of the nucleus Where ribosomes are made

19. Location of Nucleolus Found in plant AND animal cell

20. Lysosome

21. Function of Lysosomes Organelles which contain the digestive enzymes of the cell used for recycling

22. Location of Lysosomes Found in plant AND animal cell

23. Endoplasmic Reticulum

24. Functions of the E.R R.E.R. –Holds the ribosomes –Stores proteins –Puts proteins in bubbles called vesicles to send them to other cells S.E.R. –Stores compounds such as lipids and carbohydrates –Detoxify poisons or toxins Membrane that is an extension from the nuclear envelope which creates a pathway for proteins.

25. Location Found in plant AND animal cell

26. Golgi Bodies/Apparatus

27. Gogli Apparatus Processing, packaging, secreting organelle of the cell “The Post Office” of the cell

28. Location Found in plant AND animal cell

29. Mitochondria

30. Mitochondria – POWERHOUSE OF THE CELL Converts food into energy (Function) Site of cellular respiration

31. Location Found in plant AND animal cell

32. Chloroplast

33. Site of photosynthesis Green – due to chlorophyll

34. Location Found in plant cells ONLY

35. Cell Wall

36. Thick outer covering surrounding the membrane Made of Cellulose Plant cells ONLY

37. Vacuoles

38. Fluid filled sac Function Stores extra nutrients and water Stores waste

39. Location Found in plant AND animal

40. Cytoplasm

41. Gel-like mixture Surrounded by cell membrane Function Organelles float in it Contain the nutrients and chemicals of the cell

42. Cytoskeleton Protein framework of the cell Function: –Provides shape and support –Gives organelles something to attach to –Aids in movement –Aids in cell division