BIOL 260 Lecture Notes - Lecture 2: Carboxylic Acid, Glycogen, Amphoterism
3 Sep 2016
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Document Summary
Look at the body as a set of fluid compartments with some mixing between them: body mass is 50-60% water, extracellular water: the remainder, a regulated environment for cells: regulates temperature, acidity, nutrients, and waste. Homeostasis: maintain the body"s in its ideal state. This can be done through a negative feedback loop. It makes corrections if conditions are severe enough to harm the organism: examples: sweating, blood sugar regulation. Water: is a polar molecule, forms hydrogen bonds easily due to the oxygen being more electronegative (want more electrons) than hydrogen. Therefore, electrons spends more time rotating around oxygen than hydrogen, making the oxygen end slightly more negative than the hydrogen end. It has a high heat vaporization therefore it takes more energy for water to become vapor. (this helpful since if you go outside and get hot, your blood doesn"t boil. ) It"s a very good lubricant: not a good solvent for non-polar molecules.
