ECU BIOL 2130 - Exam 1 Study Guide (2 pages)

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BIO 2130 Exam 1 Study Guide Study Guide September 10 Introduction to Diffusion and Osmosis Diffusion b c molecules in a solution move continuosly and collide with other molecules cause to move away from areas with highest to low There are 3 types of diffusion Simple Facilitated Osmosis Simple high to low solute unassisted non polar Facilitated too large to pass via solution bind to protein carrier moves via waterfilled protein channels assisted Osmosis solvent water occurs when water diff on the 2 sides of membrane solute increase water decrease and vice versa water will move from high water low solute to low water high solute Isotonic Hypertonic Cells lose water shrink Solution w higher solutes outside cell Hypotonic Cells take on water until they burst Solution w higher solute inside cell