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Passive and Active Transport.notebook January 03, 2011 Cell Membrane Discuss: Phospholipid bilayer Hydrophilic heads Hydrophobic tails Semi-permeability Jan 37:13 AM Learning Goals: 1. Understand the difference between passive and active transport. 2. Understand how to calculate concentration gradient and equilibrium point. 3. Know how to determine which way molecules will move, what that will do to the size of the cell and relate that to they type of solution the cell is in. Jan 37:12 AM 1 Passive and Active Transport.notebook January 03, 2011 Passive vs. Active Transport * Passive Transport: The cell does no work, molecules can diffuse (pass) along the concentration gradient through the semipermeable membrane either through the phospholipid bilayer or through open protein channels. Passive_Transport.asf http://www.brainpop.com/science/cellularlifeandgenetics/passivetransport/ * Active Transport: The cell must do work (by using ATP), the cell uses energy to pump molecules against the concentration gradient by using protein pumps. Active_Transport.asf http://www.brainpop.com/science/cellularlifeandgenetics/activetransport/ Jan 37:14 AM Passive Transport Problems Molecular Movement Reading Guide Homework due Tuesday!! Jan 37:19 AM 2 Passive and Active Transport.notebook January 03, 2011 WHATCHALEARNIN’ 1. Compare and contrast active vs. passive transport. Include as much as possible! You may write about it, make a chart, venn diagram... 2. How are active and passive transport related to homeostasis? Oct 207:19 AM 3