1. Cell Processes Review

2. Diffusion

3. Diffusion

4. Diffusion
• How does the solute move?
• High to low or low to high
• Needs energy? or no energy

5. Equilibrium
• When concentration is the same
on either side of membrane
• No net movement of solutes

6. Osmosis
• Diffusion of water
• High concentration to low

7. Osmosis

8. Normal RBC

9. What happens to RBC
when…

10. We place them in salt water

11. We place them in distilled water

12. Facilitated Diffusion
• Movement of specific molecules across
cell membranes through protein channels
Glucose
molecules
High
Concentration
Cell
Membrane
Protein
Low channel
Concentration

13. Active Transport
• High to low or low to high
• Needs energy? or no energy?

14. Molecule to
be carried
Energy
Molecule
being carried

15. Carrier proteins
• Proteins that act like pumps

16. Endocytosis
• The process of taking material into the
cell by means of infolding of the
membrane
Food particle engulfing Forms a
vacuole

17. Phagocytosis
• Cell eating
• White blood
cells do this

18. Specialization
• When cells develop in different
ways to perform different tasks

19. Levels of Organization
Cells Tissues Organs Organ Systems

20. Biological organization