BIOL 103 Study Guide - Final Guide: Antigen, Atmospheric Pressure, Factor Ix
18 Apr 2013
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Document Summary
Virginia walker"s lab projects on the genetic mechanisms of resistance. Resistance to chemicals: chemo causes birth defects, developed system so that we don"t need to test on mammals (flies) Resistance to environmental stresses: freeze and freeze-thaw resistance in plants, invertebrates and microbes (hydrate control) Can be parasites, get nutrients from living animals (athlete"s foot, dactylella dreschsleri, arthrobotrys dactyloides) Phagocytosis (85 different proteins involved, cell eating) Digested food products are phagocytosed directly into the cells that line the gastrovascular cavity- further digested intracellularly. Wastes are excrete out of the mouth. One opening for entry and exit of food. Caecum: developed during the evolution of plant eating animals, beginning of large intestine. Rabbits eat their own poop so that the small intestine can have another chance at digesting food. Ruminant: mammal that chews cud regurgitated from its rumen. Digestive tract- mouth, esophagus, forestomach (rumen, reticulum, omasum), abomasums, intestines. Steven chu- use termites to convert cellulose into ethanol= green energy.
