Biomolecules

Biomolecules - Biomolecules Thechemistryoflife organisms...

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Biomolecules The chemistry of life We are made up of organic molecules Organic molecules are complex compounds of carbon made by living  organisms Carbon important to organic molecules Macromolecules Most biologically important molecules are macromolecules-big molecules Macromolecules are polymers Polymers are made up of monomers linked together end to end Macromolecules are defined by the monomers used to make them Monomers will show difference in structure and function Classes of macromolecules Carbohydrates Proteins Nucleic acids Lipids
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monomer H OH monomer H OH monomer H monomer OH H 2 O monomer H monomer O H monomer H OH monomer H monomer monomer OH H 2 O Consider structure and function Synthesis and Degradation Biological polymers have simple synthesis and degradation Synthesis involves loss of water o Condensation-dehydration Degradation involves adding water-hydrolysis Reversible reaction—same reaction o Equilibrium favors hydrolysis o Life is lived far from equilibrium-we are constantly building up Condensation
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monomer H monomer monomer OH H 2 O monomer H monomer OH H 2 O monomer H OH monomer H O H monomer H OH Hydrolysis Carbohydrates (fig 3.5, 3.8) Monomers-carbohydrates called simple sugars Monosaccharides-glucose, fructose Disaccharides-sucrose, maltose, lactose Can be alpha or beta linked Polymers Cellulose-polymer of glucose made by plants Starch-polymer of glucose made by plants Glycogen-polymer of glucose made by animals Function-energy storage, structure of cell Large polymers are always glucose Six carbon sugar
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Polymers of glucose (fig 3.9,3.10) Cellulose-found in plant cell walls, give shape and structure to plant cells
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This note was uploaded on 04/11/2011 for the course BIO 111 taught by Professor Dr. bos during the Fall '10 term at Purdue.

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Biomolecules - Biomolecules Thechemistryoflife organisms...

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