Molecules

Molecules - Molecules Thursday, January 15, 2009 1:23 PM 1....

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Molecules Thursday, January 15, 2009 1:23 PM 1. Electrons o Carry a negative charge o Repel one another o Are attracted to protons in the nucleus o Move in orbital's Volumes of space that surround the nucleus 2. Electron vacancies o Unfilled shells make atoms likely to react o H, C, O, and N all have vacancies in outer shells 3. Chemical bookkeeping o Use symbols for elements when writing formulas o Formula for glucose is C 6 H 12 O 6 6 carbons 12 hydrogen 6 oxygens o Photosynthesis Reaction 12H 2 O + 6CO 2 → 6O 2 + C 6 H 12 O 6 + 6H 2 O o Food Take in high energy molecules for Energy Building blocks 4. Major Organic Molecules o Carboydrates Common energy source Molecules: Sugars and Starches Glucose (monomer) Glycogen, Cellulose, Chitin (polymers) Polymers Monomers bonded Starch and Cellulose Glycogen o Lipids Hydrophobic More energy per 1 gram than carbohydrates Fats and Oils-- more calories per gram Long term energy storage
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This note was uploaded on 11/05/2011 for the course BIOL 101 taught by Professor Hogan during the Fall '08 term at UNC.

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Molecules - Molecules Thursday, January 15, 2009 1:23 PM 1....

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