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Lec5-09 - membrane 2 Graphically represent simple diffusion...

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Lec 5- 2009 file:///C|/WINWORD/COURSES/31109/Lec5-09.htm[8/19/2009 9:16:05 AM] INTRODUCTORY ANIMAL PHYSIOLOGY BIOAP3110/BIOMS3110/VTBMS3460 FALL 2009 OUTLINE - LECTURE 5 Diffusion and Transport (readings - Chapter 4, pp45-51 (excluding osmosis); 52-56) I. Major Topics/Concepts to be covered: 1. Diffusion including mathematical definition. 2. The semipermeable membrane. 3. Membrane pores, channels and carriers. 4. Simple diffusion through the membrane. 5. Facilitated diffusion. 6. Active transport. II. You will have learned the material when you can: 1. Use the equations defining solute diffusion to determine the rates at which various substances will diffuse in solution or across a
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Unformatted text preview: membrane. 2. Graphically represent simple diffusion, facilitated diffusion and active transport. 3. Regurgitate how biological systems move materials across membranes. III. Sample Problems: 1. Draw a graph predicting the relationship of simple diffusion across a membrane to temperature. Do the same for facilitated diffusion and active transport (use the range of O degrees to 80 degrees C.). 2. What determines the specificity of a membrane channel? 3. Which membrane would pass molecules through it faster assuming the same total number, not density of pores - one with a surface area of 2 mm^2 or one of 4 mm^2?...
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