Chapter 3 - edited outline

Chapter 3 - edited outline - OUTLINES FOR BIOLOGY 1201...

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OUTLINES FOR BIOLOGY 1201 Sections 003 and 004 Fall 2009 DR. STEVEN POMARICO 1C CHAPTER 3 WATER AND THE FITNESS OF THE ENVIRONMENT Water: Hydrogen Bonding, Solubility, and Specific Heat - 3.1.1 Cells are 70-95% water. Water cover 70% of the earth’s surface. Some of the most biologically important polar covalent bonds are the bonds in water molecules. o Because of these polar covalent bonds water is a polar molecule . This is an example of an emergent property. o The polarity of water molecules makes water a good solvent for molecules that have charged regions (i.e. polar molecules) or atoms that are charged (i.e. ions) Water is a very versatile solvent (see fig. 3.7 and fig 3.8). o Solution
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o Solvent o Solute o aqueous solution Water's polarity along with hydrogen bonding orders water into a higher level of structural order (see fig. 3.2). o This higher structural order and polarity results in some other extraordinary emergent properties: Water resists changes in temperature because of high specific heat . This helps to moderate the effects of changes in
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This note was uploaded on 08/29/2010 for the course BIOL 1201 taught by Professor Wishtichusen during the Fall '07 term at LSU.

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Chapter 3 - edited outline - OUTLINES FOR BIOLOGY 1201...

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