2_19 - 2/19/2010 Chapter 18 Mass composition data for the...

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2/19/2010 1 Chapter 18 Mass composition data for the human body in terms of major types of biochemical substances.
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2/19/2010 2 Carbohydrates are the most abundant class of bioorganic molecules. Although their abundance in the human body is relatively low, carbohydrates constitute about 75% by mass of dry plant material. Green (chlorophyll-containing plants produce carbohydrates via photosynthesis. Dietary intake of plant materials is the major carbohydrate source for humans. CO 2 H 2 O SolarEnergy Chlorophyll  Carbohydrates O 2 1. Carbohydrate oxidation provides energy. 2. Carbohydrate storage, in the form of glycogen, provides a short-term energy reserve. 3. Carbohydrates supply carbon atoms for the synthesis of other biochemical substances (proteins, lipids, and nucleic acids). 4. Carbohydrates form part of the structural framework of DNA and RNA molecules. 5. Carbohydrates linked to lipids (Chapter 19) are structural components of cell membranes. 6. Carbohydrates linked to proteins (Chapter 20) function in a variety of cell cell and cell molecule recognition processes.
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2/19/2010 3 Simpler Formula: C n H 2n O n or C n (H 2 O) n (hydrates of C) n= number of atoms Carbohydrates are polyhydroxy aldehydes or ketones
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This note was uploaded on 05/05/2010 for the course CHM 1031 taught by Professor Gow during the Spring '09 term at University of Florida.

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2_19 - 2/19/2010 Chapter 18 Mass composition data for the...

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