Lec4_07 - active transport 3 Regurgitate how biological...

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Lec 4- 2007 INTRODUCTORY ANIMAL PHYSIOLOGY BIOAP 311/VETBM 346 FALL 2007 OUTLINE - LECTURE 4 Diffusion and Transport (Readings - Chapter 1 excluding Osmosis section) I. Major Topics/Concepts to be covered: 1. The semipermeable membrane. 2. Membrane pores, channels and carriers. 3. Diffusion including mathematical definition. 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 membrane. 2. Graphically represent simple diffusion, facilitated diffusion and
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Unformatted text preview: 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? file:///C|/WINWORD/COURSES/31107/Lec4-07.htm8/15/2007 10:16:54 AM...
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