MOVEMENT OF MATERIALS THROUGH THE CELL MEMBRANE DIFFUSION

MOVEMENT OF MATERIALS THROUGH THE CELL MEMBRANE DIFFUSION OSMOSIS ACTIVE TRANSPORT FACILITATED DIFFUSION

MOVEMENT OF MATERIALS FROM higher CONCENTRATION AREA OF ____ TO AREA OF lower CONCENTRATION UNTIL ____ equilibrium IS REACHED _____ Does not __________ USE ENERGY

STUFF GOES FROM WHERE THERE More stuff IS ________ TO WHERE THERE less stuff UNTIL THERE IS _______________ AMOUNT OF an equal STUFF

WHAT SHOULD HAPPEN HERE? WHY?

Only the small molecules can pass thru the membrane

MOVEMENT OF ______ water FROM AREA higher CONCENTRATION TO OF ______ AREA OF lower ______ CONCENTRATION UNTIL ______ equilibrium IS REACHED Does not ________ REQUIRE ENERGY

WHAT SHOULD HAPPEN HERE? WHY?

Only the small molecules can pass thru the membrane

• Where the concentration of water is higher _____ outside than inside • Causes the water to move _______ the cell burst • Cell will eventually _____

• Where the concentration of water is lower _____ outside than inside outside • Causes the water to move _______ the cell shrivel • Cell will eventually _____

• Where the concentration of water is _____ the same outside and inside into and out of • Causes the water to move _______ the cell stay the same • Cell will eventually _____

channels • Proteins create ______ that allow certain chemicals to pass thru the cell membrane STUFF GOES FROM WHERE THERE More stuff IS ________ TO WHERE THERE less stuff UNTIL THERE IS _______________ AMOUNT OF STUFF an equal Does not __________ USE ENERGY

WHAT SHOULD HAPPEN HERE? WHY?

Both the large and the small molecules can pass thru the membrane

MOVEMENT OF MATERIALS FROM lower AREA OF ______ CONCENTRATION TO AREA OF _______ higher CONCENTRATION does ________ REQUIRE ENERGY carrier ASSISTED BY ________ MOLECULES

WHAT SHOULD HAPPEN HERE? WHY?

Pinocytosis Liquid particle is surrounded • When a _______ by a pocket in the cell membrane and taken into the cell

Phagocytosis solid particle • When a ________ is surrounded by a pocket in the cell membrane and taken into the cell

Review Questions: Answer on separate paper, please. 1. Compare osmosis and diffusion. 2. Contrast osmosis and diffusion. 3. How is active transport different from both osmosis and diffusion. 4. How is pinocytosis different from phagocytosis? 5. How is facilitated diffusion different from normal diffusion?