BIO 111 Lecture Notes - Lecture 3: Glycosidic Bond, Chemical Formula, Mirror Image

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20 Sep 2016
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Chapter 3: the chemical basis of life i: organic molecules. Can form nonpolar (poorly water-soluble) and polar bonds (water soluble) Non-polar side polar side (o2 is more electronegative) Groups that are together have same function. Two structures with an identical molecular formula but different structures and characteristics. Structural isomers contain the same atoms but in different bonding relationships. Sterioisomers same molecular formula identical bonding relationships, but the spatial positioning of the atoms differs in the two isomers. Organic molecules: carbohydrates **storage of energy*, lipids, proteins, nucleic acids. Removal of water reactions that link momomers to form polymers. Polysaccharides - a bunch of monosaccharides stuck together. Fats triglycerides formed by: glycerol + 3 fatty acids saturated: single bonds (solid) unsaturated: double bonds (liquids) energy storage. Glycerol + 2 fatty acids + 1 phosphate group. Not very water soluble -> causes blockages. Composed of c, h, o2, n, other elements. What promotes protein folding and stability: hydrogen bonds.

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