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Wed. January 24

Wed. January 24 - Storage Starch(plants Glycogen(animals...

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Biological Molecules Large molecules constructed from smaller molecules. Polymers constructed from monomers. Mono = single Poly = many Biological Molecules except for water, all are built on carbon skeleton. Water Carbohydrates Lipids Proteins Nucleic Acids Functional Groups Hydroxyl-Alcohols Carbonyl-Aldehydes (terminal carbon) and keytones Carboxyl-Acid group Amino-Amines Sulfhydryl-Thiols Phosphate-Organic Phosphates ( Figure 4.5) Synthesis of Polymers Condensation (dehydration) synthesis Breakdown of Polymer Hydrolysis
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Breaking the covalent bond of the polymer by the addition of a water molecule. Why make large biological molecules from simple monomers? Flexible system Fewer enzymes to make biological molecules than if “starting from scratch.” Carbohydrates General formula (CH 2 O) n 2 Major roles Metabolic fuel Glucose Sucrose
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Unformatted text preview: Storage Starch (plants) Glycogen (animals) Carbohydrates – structural roles Cellulose (plants) Chitin (animals) Lipids Water-insoluble organic biomolecules made up of “non-polar” groups. Structural components of cell membrane. Storage and transport forms of fuel. Protective surface coating (like plant leaves) Cell component in cell recognition. Hormone First exam Febuary 8, 2007 Fat Types • Saturated (Saturated with H, no double bonds between adjacent carbons) • Unsaturated (Double bonds, lower melting point) Melting Points Differ • Saturated fats are solids at higher temperatures than unsaturated fats. • Acyl chains of unsaturated fats are kinky and therefore require a lower temperature to become a solid. Polymers • Triglycerides • Phospholipds...
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Wed. January 24 - Storage Starch(plants Glycogen(animals...

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