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UGA BIOL 1108 - BIOL 1108 1-8-14

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1-8-14Notes- Membrane HW Quiz opens @ 4 PM- Register your clickers for 1108: instructions posted on ELC this eveningToday’s Agenda- The Importance of self-testing- Membrane structure and function- Importance of Sizeo Use of models in biologyo Using a model to study cell sizeo Relate back to biology- For Monday: Review evolution by natural selection and find examples of the importance of size in the world around you (apply what you learned today)Why membranes are important?- Increase surface area- Keep things in and out- ***MAKE LIFE POSSIBLE***Membranes- Separate internal from external environment - Homeostasis: ability to maintain a relatively stable internal environment more or less independent from the external environment- Structures: Functions:o Phospholipids  Barriero Proteins  Transporto Cholesterolo Extracellular matrix o GlycoproteinsCell Size- Limited - Eukaryotes 10-100 micrometers- Prokaryotes 1-10 micrometersWhy is cell size limited?- Nutrients can’t reach the full volume of the cell if it’s too largeModels- simplify question- involves key variables - Make model- Test model  1. Rules 2. Back to nature &


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UGA BIOL 1108 - BIOL 1108 1-8-14

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