ACTIVE TRANSPORT Chapter 5 pg. 103-106. Active Transport Requires energy! Molecules move from an area of low concentration to an area of high concentration.

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ACTIVE TRANSPORT Chapter 5 pg

Active Transport Requires energy! Molecules move from an area of low concentration to an area of high concentration Move against the concentration gradient

1. Membrane pumps

Pumps – Transport proteins that use energy – (low  high) Protein transfers the molecule to the other side. Sodium-Potassium Pump: transports Na+ and K+ against (not down) gradient

2. Endocytosis Bring large molecules into cell 1.Material is engulfed by cell membrane. 2.Membrane makes a pouch. 3.Pouch then pinches off and makes a vesicle. 4.Vesicle binds with lysosome.

2. Endocytosis Phagocytosis: A form of endocytosis in which immune cells attack and kill bacteria

3. Exocytosis Moving large particles out of the cell (the reverse of endocytosis) Draw This

1.Finish Grape Lab 2.Finish “Transport Review” DUE MONDAY Grape Lab Transport Review Cell Chosen Chart (on model directions)