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Transcript
Name: _________________________ Date: _________________________ Cells use two different types of transport to ensure homeostasis within the cell itself. The plasma membrane is a selectively permeable membrane that allows the cell to regulate its internal environment. The two types of transport are passive and active. Passive transport is a process by which substances move across the membrane moving from a high concentration gradient to low concentration gradient, whereas active transport requires the use of energy and substances must move against the concentration gradient by moving from an area of low concentration to an area of high concentration. Use the following graphic organizer to identify the mechanisms of transport that cells utilize. Fill in the boxes with the following: Passive Transport High Low Concentration Osmosis Excocytosis Pinocytosis Cell Transport Diffusion Phagocytosis Facilitated Transport – using carrier proteins Active Transport LowHigh Concentration Hypertonic Water flows OUT of the cell Isotonic Water moves in and out of the cell - Equilibrium Hypotonic Water flows INTO the cell Protein Pump Sodium/Potassium Endocytosis No Energy Needed HighLow Concentration Energy Needed LowHigh Concentration