[LIFESCI 2] - Final Exam Guide - Ultimate 89 pages long Study Guide!
29 Nov 2016
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Chemical bonds and chemical reactions: atoms of reactive elements combined, four most important chemical linkages=ionic, covalent, hydrogen, and van der waals. C: primary reason for why most organisms cannot survive temps greater than 45 degrees, thermophiles are stabilized at high temps by van der waals forces and other noncovalent interactions. Ex: atropine drops to control the dilation of pupil during eye examinations by mimicking the lock and key fashion of acetylcholine that naturally occurs in the eye. Hydrogen bonds gives water several unusual, life-sustaining properties. If ice were denser than liquid, water would freeze from the bottom up, killing aquatic life. C: heat of vaporization for water=586 cal/g i. ii. Amount of heat required to cause water to transition from liquid to gas. Heat loss from vaporization of sweat keeps body temp from increasing when environment is too hot. D. the polarity of water molecules in the hydrogen bond lattice contributes to.
