CELL MOVEMENT DIFFUSION AND OSMOSIS.

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Presentation transcript:

CELL MOVEMENT DIFFUSION AND OSMOSIS

Cell Membrane Protects the cell Selective Permeability: -cell only lets some things in and some things out

Cell Membrane LETS IN: -Oxygen -Food molecules - Water LETS OUT: -Wastes

How do particles move in and out of cells? PASSIVE TRANSPORT -DIFFUSION -OSMOSIS ACTIVE TRANSPORT

How do particles move? PASSIVE TRANSPORT: -Movement of materials from high concentration to low concentration -DOES NOT require ENERGY

PASSIVE TRANSPORT PORES MOLECULES MOLECULES CELL MEMBRANE

TYPES OF PASSIVE TRANSPORT DIFFUSION: -When molecules move across a membrane from high concentration to low concentration Why do the molecules move? -To even out (HOMEOSTASIS)

TYPES OF PASSIVE TRANSPORT OSMOSIS: -When WATER moves across a membrane from high concentration to low concentration Why does water move? -Homeostasis

DIFFUSION/ OSMOSIS Before diffusion/osmosis CELL NUCLEUS CELL MEMBRANE

DIFFUSION/ OSMOSIS Before diffusion/osmosis After diffusion/osmosis CELL CELL NUCLEUS NUCLEUS CELL MEMBRANE CELL MEMBRANE

How do particles move? ACTIVE TRANSPORT: -Movement of molecules from areas of low to high concentration -Requires Energy

ACTIVE TRANSPORT PORES MOLECULES MOLECULES CELL MEMBRANE

Cell Membrane LETS IN: - LETS OUT:

Cell Membrane ___________________ __________________: -__________________ __________________

How do particles move? PASSIVE TRANSPORT: ______________________________________________________________________________________________________________ ____________________________________________

TYPES OF PASSIVE TRANSPORT DIFFUSION: ________________________________________________________________________________________________________________________________________________ Why do molecules move? ____________________________________________________________________________

TYPES OF PASSIVE TRANSPORT OSMOSIS: ______________________________________________________________________________________________________ Why does water move? ________________________________________________

How do particles move? ACTIVE TRANSPORT ______________________________________________________________________________________________________________ ____________________________________________

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