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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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- Fall '07