1. Cell Transport

2. The Plasma (aka “cell”) membrane is made up of a lipid (generally phospholipid) bilayer
(two layers)

4. maintaining equilibrium in the internal environment
Homeostasis
maintaining equilibrium in the internal environment

5. Diffusion
Net movement of particles / solute from an area of higher concentration to an area of lower concentration.
Occurs because of the random movement of particles.
Passive, slow process.
Affected by:
Temperature
Concentration
Pressure

7. solvent
solute + =
solution

8. Transport proteins provide larger openings in the plasma membrane through which particles can pass…

11. Passive, aided diffusion
A form of passive transport using transport proteins
Carrier Protein
Passive, aided diffusion

13. Osmosis: movement (diffusion) of water / solvent from High to Low concentration
VIDEO

15. Other Active Transport…
Endocytosis- process of taking material into the cell by means of infolding the cell membrane to form a vacuole
Exocytosis- the membrane of a vacuole fuses with the cell membrane and expels its contents out of the cell

16. Types of Solutions
Hypertonic- concentration of solute outside of cell is greater than inside of cell, water flows out, cell shrivels
Hypotonic- concentration of solute inside cell is greater than outside of cell, water flows in, cell swells
Isotonic- concentration of solution is the same inside and outside of cell, water flows equally in and out, cell remains same size

19. A:
Hypertonic

20. B:
Hypotonic

21. C:
Isotonic

23. Levels of organization
Cells Specialization – cells throughout an organism developing in different ways to perform different tasks
Blood cells  transport oxygen
Muscle cells  have overdeveloped cytoskeleton
Levels of organization
Cell  tissue  organ  organ systems
Tissue  groups of similar cells performing a similar function
Organ  groups of tissues working together
Organ systems  groups of organs working together

24. Show cellRAP (student created)
PPT presentation