BIO 1001 NS Exam1

BIO 1001 NS Exam1 - Why is Carbon So important in...

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Why is Carbon So important in Biological Molecules? Most Biological molecules are carbon based  Versatility: forms 4 covalent bonds  Organic molecules= Carbon(C) +Hydrogen(H) only made by living things  Ex: Single Bonds 1. Carbon CH4 -methane 2. Carbon chain-C2H6-ethane  3. Carbon chain-propane-C3H3 4. Carbon chain-butane-C4H10 –every carbon has 4 bonds Ex: Double Bonds 1. C4H8-1-butene -4 bonds 2. Cyclohexane-six carbons Functional Groups (Table 3-1) Hydrogen –H Polar/non polar Hydroxyl- OH- polar Carboxyl- COOH- Acidic  Amino- Basic –NH2  Phosphate-Acidic –PO4H2  Methyl- non polar –CH3 
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How are Organic Molecules Synthesized Organic molecules in all living orgs share two similarites Use same functional groups  Formed by the modular approach  o Stick subunits together like cars in train  o Monomer-single unit o Dimer-double unit  o Polymer-many  Dehydration/hydrolysis  Dehydration Synthesis  Original 2 monomers-we get two dimers (water comes out)  Hydrolysis-lysis(rip apart)  Everytime bond forms between monomers-water comes out-dehydration  synthesis  6-5 waters would come out  *How many molecules of H20 are created when a polymer 100 monomers long is created? A. 90  B. 95  C. 99 D. 100 
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1. What are Carboydrates? 1. Composition  literally carbon +water (CH 2 O)n 2. Function  Energy  Structural Monosaccharide 1 sugar, immediate E  Disaccharide 2 sugars short term E storage  Polysaccharide Many sugars Long term E storage Structural  Ex: Cellulose-wood is mostly cellulose,  fig 3.3
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This note was uploaded on 04/07/2011 for the course BIOL 1001 taught by Professor Minor during the Spring '08 term at LSU.

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BIO 1001 NS Exam1 - Why is Carbon So important in...

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