BIOL 4451- Midterm Exam Guide - Comprehensive Notes for the exam ( 83 pages long!)

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13 Oct 2017
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Exam 3 study guide aquatics: most common pesticides are defined broadly as being either insecticides, herbicides, or fungicides, pesticide means a lot of chemicals, total use associated with these 3 categories in the us, herbicides: 70% Insecticides: 20: fungicides: 10, until a few years ago the greatest use was insecticides, now herbicides is at the top, chemical classification, chlorinated organics, example: ddt and its metabolites ddd and dde, dichloro-diphenyl-trichloroethane, problems generally due to dde. Inhibit cholinesterase: both inhibit cholinesterase but the difference is how each ties up the enzyme, pyrethroids, sodium channel primary target site, effects sodium channel, chlorinated organics, nervous system primary target site, ex. In a region where interested in: soil vary from region to region, have the pesticide in question, easiest way to do this is take the pesticide and radiolabel it, can read the radioactivity. Increasing temperature variability: when you have extreme temperature you see a population shift of the types of.

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