Chapter 3

Chapter 3 - Chapter 3 Chapter 3 1 Biological Molecules...

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Unformatted text preview: Chapter 3 Chapter 3 1 Biological Molecules Biological Molecules Why Is Carbon So Important in Biological Molecules? Most Biological Molecules are Carbon Based Versatility: forms 4 covalent bonds Organic molecules = C + H Only made by living things DOUBLE BONDS RINGS Hydrogen Hydroxyl Carboxyl Amino Phosphate Methyl Functional Groups (Table 3-1) Polar/nonpolar Polar Acidic Basic Acidic Nonpolar How Are Organic Molecules Synthesized? Organic molecules in ALL living orgs share two similarities 1. Use same functional groups 2. Formed by the modular approach-stick subunits together like cars in train Monomer single unit Dimer double Polymer many Dehydration / Hydrolysis Dehydration / Hydrolysis Dehydration Synthesis Dehydration Synthesis Hydrolysis 1- What Are Carbohydrates? 1. Composition a. Literally carbon + water b. (CH 2 O) n 2. Function a. Energy b. Structural Monosaccharide 1 sugar, immediate E Disaccharide 2 sugars short term E storage Polysaccharide Many sugars, Long-term E storage Structural Cellulose (Fig. 3-3) Chitin (Fig. 3-4) Polymer w/ glucose subunits and N-containing functional groups Makes up insect exoskeletons & fungus cell walls 2- What are Lipids?2- What are Lipids?...
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This note was uploaded on 07/15/2008 for the course BIOL 1001 taught by Professor Minor during the Spring '08 term at LSU.

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Chapter 3 - Chapter 3 Chapter 3 1 Biological Molecules...

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