4. 4A Cell Organelles specialized structures within a living cell

5. Cell Wall Structure Outer layer of a cell Made of cellulose Rigid & strong

6. Cell Wall Function Provides support (maintains cell shape) Protects cell Helps maintain cell shape Allows O 2, H 2 O, & CO 2 into & out of cell

7. Cell Wall

8. Cell (Plasma) Membrane Structure Outer layer of an animal cell Inside cell wall in plants Selectively permeable Double layer of phospholipids with proteins

9. Cell (Plasma) Membrane Function Provides support & protection Controls movement of materials into & out of cell Maintains homeostasis - balance

10. Cell (Plasma) Membrane

11. Nucleus Structure Large, dark center of cell Holds DNA

12. Nucleus Function Controls all cellular activities Contains hereditary (genetic info) material of the cell

13. Nucleus

14. Cytoplasm Structure Clear, thick, jellylike material Organelles are found inside cytoplasm Contains the cytoskeleton fibers

15. Cytoplasm Function Supports and protects cell organelles

16. Cytoplasm

17. Chloroplast Structure oval shaped containing chlorophyll (green pigment) Stacks of thylakoids inside called grana Gel-like, innermost substance called stroma

18. Chloroplast Function Uses E from the sun to make food (glucose) for plants in a process called photosynthesis Releases oxygen

19. Chloroplast

20. Mitochondria Structure Peanut shaped Double membrane w/ smooth outermembrane

21. Mitochondria Function Breaks down glucose molecules to release energy in the form of ATP Site of aerobic respiration Releases CO 2

22. Mitochondria

23. Endoplasmic Reticulum (ER) Structure Network of tubes or membranes Smooth without ribosomes Rough with ribosomes Connects nuclear envelope & cell membrane

24. Endoplasmic Reticulum (ER) Function Carries materials through cell Aids in making proteins & transporting them to Golgi bodies

25. Endoplasmic Reticulum (ER)

26. Ribosome Structure Small round bodies free or attached to ER Made of rRNA & protein

27. Ribosome Function Synthesize (make) proteins

28. Ribosome

30. Lysosome Structure Small & round with a single membrane

31. Lysosome Function Breaks down larger food molecules into smaller molecules digests old cell parts

32. Lysosome

33. Golgi Body (apparatus) Structure Stacks of flattened sacs

34. Golgi Body (apparatus) Function Modify proteins made by the cells Packages & exports the proteins

35. Golgi Body (apparatus)

36. Centrioles Structure Paired structures near the nucleus Made of a cylinder of microtubule pairs

37. Centrioles Function Assist in cell division

38. Centrioles

39. Vacuoles Structure Fluid-filled sacs Largest organelle in plant cells

40. Vacuoles Function Store water, food & wastes Store large amounys of food or sugars in plants

41. Vacuole

42. Cilia Structure Short, hair-like structures

43. Cilia Function Aids in movement

44. Cilia

45. Flagella Structure Long, tail-like structures

46. Flagella Function Aids in movement

47. Flagella