Bio Lecture 8 Carbs and Lipids

Bio Lecture 8 Carbs and Lipids - Lecture 8 Carbon...

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Lecture 8: Carbon, carbohydrates, and lipids Monday 10/12/09 Reading Ch 4 pgs 58-66; Ch 5 pgs 68-77
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Cell composition water (70-95%) carbon based compounds (rest) Carbon - carbon bond Carbon bonded to other elements H, O, N, S, P Carbohydrates, lipids, proteins and DNA
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Carbon atoms: Building blocks of biological molecules Carbon atom has 4 valence electrons Can form 4 covalent bonds
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Molecular diversity of carbon compounds Large variation in the arrangement of the carbon skeleton Diversity in length, # branches, double bonds, ring structure
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Molecular diversity of carbon compounds Functional groups that replace H Location, type, and number determine functional properties
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Carbon based macromolecules Carbohydrates Proteins Nucleic acids Lipids Diverse group of hydrophobic macromolecules Built from two or more different types of smaller subunits Polymer: Long molecule built from similar subunits (monomers) linked by covalent bonds
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