1. Cell Structure and Function

2. Cell compartmentalization

3. Organelle jigsaw Nucleus Ribosomes Smooth ER Rough ER Golgi apparatus Lysosomes Vacuoles

4. Cytoskeleton - structure Network of fibers extended throughout the cytoplasm FLEXIBLE!

5. Cytoskeleton function Mechanical support Maintain shape (animal cells) Anchors organelles and molecules Motility  Moves entire cells  Moves part of the cell  Motor proteins needed (whole cell, cilia, flagella, muscle contraction, vesicle movement)  Signal transduction

6. Cytoskeleton components

7. Microtubules - Centrioles 9 sets of 3

8. Microtubules - Cilia and Flagella

10. Microfilaments

11. Plant cell wall Cell protection, shape maintenance, prevents water uptake Found in some prokaryotes, protists, and fungi Cellulose + other polysaccharides

12. Extracellular Matrix

13. Carbohydrate functions

14. Intercellular junctions

15. Cell membrane structure

16. Protein functions

17. Membrane permeability Is the cell membrane permeable to…  Hydrophobic (nonpolar) molecules  Ions  Polar molecules  Small versus large molecules Aquaporins

18. Lab 1: Diffusion & Osmosis Concepts  semi-permeable membrane  diffusion  osmosis  solutions hypotonic hypertonic isotonic  water potential

19. Diffusion vs. osmosis

20. Lab 1: Diffusion & Osmosis

21. Tonicity

22. Water potential (KNOW THIS WELL!) Ψ: Water potential (in MPa) Always higher to lower Ψ Ψ s : solute potential (osmotic potential) Always (-) Ψ p : Pressure potential (+ or -) Animal cells: Ψ = Ψ s ( Plant cells: Ψ = Ψ s + Ψ p

24. Facilitated diffusion

25. Active transport

26. Cotransport

27. Sodium-Potassium Pump

28. Endocytosis and exocytosis

29. Reading quiz Page 140, problems 6-10

30. Review of chromosome vs. chromatid

31. Cell cycle

32. Mitotic spindle

33. Cytokinesis

34. Cell cycle control

36. Cancer growth