Chapter%202%20MDM

Chapter%202%20MDM - Lecture Connections 2 | Water and...

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Click to edit Master subtitle style Lecture Connections 2 | Water and Aqueous Solutions © 2009 W. H. Freeman and Company
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Water is the Medium for Life Life evolved in water (UV protection) Organisms typically contain 70-90% water Chemical reactions occur in aqueous milieu Water is a critical determinant of the structure and function of proteins, nucleic acids, and membranes
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Structure of the Water Molecule
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Hydrogen Bonding in Water
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Water as a Solvent Water is a poor solvent for nonpolar substances nonpolar gases aromatic moieties aliphatic chains Water is a good solvent for charged and polar substances amino acids and peptides small alcohols carbohydrates
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Water Dissolves Many Salts
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The Hydrophobic Effect Tendency of water to minimized its contacts with non-polar (hydrophobic) molecules. Is one of the main factors behind: Protein folding Protein-protein association Formation of lipid micelles Binding of steroid hormones to their receptors
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Click to edit Master subtitle style Amphipathic Molecules
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Chapter%202%20MDM - Lecture Connections 2 | Water and...

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