L1macromolecules_sp10

L1macromolecules_sp10 - Chemistry of Life Macromolecules...

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Chemistry of Life
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Macromolecules Within cells, small organic molecules are joined together to form larger molecules-- macromolecules . Four major classes: carbohydrates, lipids, proteins, and nucleic acids. They form chainlike molecules called polymers A polymer is a long molecule consisting of many similar or identical building blocks linked by covalent bonds. The repeated units are small molecules called monomers. Some of the molecules that serve as monomers have other functions of their own.
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Synthesis & Breakdown of Polymers
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Include sugars and their polymers Most names for sugars end in - ose . Molecular formulas are some multiple of the unit CH 2 O For example, glucose has the formula C 6 H 12 O 6 The simplest carbohydrates are monosaccharides Disaccharides consist of two monosaccharides Maltose, malt sugar, is formed by joining two glucose molecules. Sucrose, table sugar, is formed by joining glucose and fructose. Lactose, milk sugar, is formed by joining glucose and galactose. Polysaccharides are polymers of many monosaccharides. Plants store surplus glucose as starch Animals store surplus glucose as glycogen. Cellulose is a major component of the tough wall of plant cells. Chitin
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This note was uploaded on 02/22/2010 for the course BIO 183 taught by Professor Parks during the Spring '07 term at N.C. State.

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L1macromolecules_sp10 - Chemistry of Life Macromolecules...

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