1. Write
Cell Transport

2. Molecules can pass through the cell membrane in four ways
Write
Molecules can pass through the cell membrane in four ways
Directly through the membrane (phospholipid bilayer)
Membrane Channels
Carrier Molecules
Vesicles

3. Cell transport can be categorized into two major groups
Write
Cell transport can be categorized into two major groups
Passive Transport
NO ENERGY NEEDED
Goes with concentration gradient
Active Transport
ENERGY NEEDED
Goes with concentration gradient
Diffusion
Facilitated Diffusion
Osmosis
Filtration
Endocytosis
Pinocytosis
Phagocytosis
Receptor-mediated endocytosis
Exocytosis

4. Write
Cell Transport
Movement of things in and out of the cell occurs between two solutions.
Extracellular Fluid = Solution outside of the cell
Intercellular Fluid = Solution inside of the cell
Intracellular Fluid
Intracellular Fluid
Intracellular Fluid
Intracellular Fluid
Intracellular Fluid
Cell
Cell
Cell
Cell
Cell
Extracellular Fluid

5. Write
Diffusion
The movement of particles (solutes) from an area of high concentration to low concentration until equilibrium is met.

6. Diffusion Intracellular Fluid (Cytoplasm) Extracellular Fluid
Hypertonic
Isotonic
Intracellular Fluid
(Cytoplasm)
Hypotonic
Isotonic

7. Body Example: Breathing
Listen
Body Example: Breathing

8. Diffusion = Solute moves from HYPERTONIC  HYPOTONIC
Write
Diffusion
Diffusion always moves from Hypertonic (high solutes) to hypotonic (low solutes) solutions.
Diffusion = Solute moves from
HYPERTONIC  HYPOTONIC

9. Facilitated Diffusion
Faciliated Diffusion
Diffusion with the aid of a carrier protein or protein channel
Used for larger molecules such as sugars and amino acids
carrier protein or protein channel is specific to one molecule

10. Write
Osmosis
The movement of water (solvent) between two solutions until equilibrium is met. Occurs when solutes cannot pass through the cell membrane.

11. Osmosis = Water moves from HYPOTONIC  HYPERTONIC
Write
Osmosis
Osmosis always moves from hypotonic solutions (low solutes, but high solvent) to hypertonic solutions (high solutes, but low water)
Osmosis = Water moves from
HYPOTONIC  HYPERTONIC

12. Osmosis and Animal Cells
Listen
Osmosis and Animal Cells
Hypertonic Extracellular Fluid
Isotonic Extracellular Fluid
Hypotonic Extracellular Fluid
No water movement.
Cell stays the same.
Water moves out of the cell.
Cell Shrinks.
Water moves into the cell.
Cell expands.
Water is moving from the HYPOTONIC cell to the HYPERTONIC solution
Water is moving from the HYPOTONIC solution to the HYPERTONIC CELL

13. Write
Filtration
Passage of materials through the membrane due to pressure from the cardiovascular system

14. Listen

15. Endocytosis Movement of particles into the cell via vesicles
Write
Endocytosis
Movement of particles into the cell via vesicles
Requires energy
Pinocytosis
“Cell drinking”
Cell takes in extracellular fluid with some small particles
Phagocytosis
Cell Eating
Cell takes in large particles in the extracellular fluid
White blood cells eat a lot of bacteria this way
Receptor mediated Endocytosis
Receptors must be activated before endocytosis can occur

17. Exocytosis Movement of particles out of the cell via vesicles
Write
Exocytosis
Movement of particles out of the cell via vesicles
Requires energy