1. Movement of particles across the cell membrane without using energy
Chapter 7
Cellular Structure and Function
7.4 Cellular Transport
Passive Transport
Movement of particles across the cell membrane without using energy
Three Modes of Passive Transport
Diffusion
Facilitated Diffusion
Osmosis

2. Chapter 7
Cellular Structure and Function
7.4 Cellular Transport
Diffusion
Movement of particles from an area of high concentration to an area of lower concentration
Initial Conditions
Diffusion
Low
High
High
Low

3. Diffusion is controlled by
Chapter 7
Cellular Structure and Function
7.4 Cellular Transport
Diffusion is controlled by
Temperature
Pressure
Concentration
Dynamic Equilibrium
Reached when diffusion of material into the cell equals diffusion of material out of the cell
Molecules continue to move, but the overall concentration remains the same.

4. Diffusion in a Cell 7.4 Cellular Transport Chapter 7
Cellular Structure and Function
7.4 Cellular Transport
Diffusion in a Cell

5. Facilitated Diffusion
Chapter 7
Cellular Structure and Function
7.4 Cellular Transport
Facilitated Diffusion
Movement of materials across the plasma membrane using proteins

6. Channel Proteins Carrier Proteins 7.4 Cellular Transport Chapter 7
Cellular Structure and Function
7.4 Cellular Transport
Channel Proteins
Carrier Proteins

7. Diffusion of water across a selectively permeable membrane
Chapter 7
Cellular Structure and Function
7.4 Cellular Transport
Osmosis
Diffusion of water across a selectively permeable membrane
Three Types of Solutions
Isotonic
Hypotonic
Hypertonic

8. Chapter 7
Cellular Structure and Function
7.4 Cellular Transport
Isotonic Solution
Water and dissolved substances diffuse into and out of the cell at the same rate.
Plant Cell
Blood Cell
11,397x

9. Solute concentration is higher inside the cell.
Chapter 7
Cellular Structure and Function
7.4 Cellular Transport
Hypotonic Solution
Solute concentration is higher inside the cell.
Water diffuses into the cell.
Plant Cell
Blood Cell
13,000x

10. Solute concentration is higher outside the cell.
Chapter 7
Cellular Structure and Function
7.4 Cellular Transport
Hypertonic Solution
Solute concentration is higher outside the cell.
Water diffuses out of the cell.
Plant Cell
Blood Cell
13,000x

11. Active Transport Using Carrier Proteins
Chapter 7
Cellular Structure and Function
7.4 Cellular Transport
Active Transport
Movement of particles across the cell membrane using energy
Active Transport Using Carrier Proteins

12. Types of Active Transport Pumps
Chapter 7
Cellular Structure and Function
7.4 Cellular Transport
Types of Active Transport Pumps
Na+/K+ ATPase pump
Moves three Na+ ions out of the cell and two K+ ions into the cell

13. Process by which the cell surrounds and takes particles into the cell
Chapter 7
Cellular Structure and Function
7.4 Cellular Transport
Endocytosis
Process by which the cell surrounds and takes particles into the cell
Exocytosis
Secretion of material out of the plasma membrane