9-12 - Metabolism Metabolism is the collection of...

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Metabolism Metabolism is the collection of biochemical reactions that occur in a cell, which include a tremendous diversity of molecular conversions. Most of these reactions can be grouped into metabolic pathways containing a sequence of chemical reactions in which each reaction is catalyzed by a specific enzyme, and the product of one reaction is the substrate for the next. A B C D E end product1 E 1 E 2 E 3 E 4 E 5 F G H+C I J end product2 E 6 E 7 E 8 E 9 E 10 B, C, D, E, G, H, I, J are metabolic intermediates or metabolites.
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A B C D E end product1 E 1 E 2 E 3 E 4 E 5 F G H+C I J end product2 E 6 E 7 E 8 E 9 E 10 1. Enzymes constituting a metabolic pathway are usually confined to a specific compartment of the cell, in some cases they form a large complex. 2. The metabolic pathways of a cell are interconnected at various points so that a compound generated by one pathway may be shuttled in a number of directions depending on the requirements of the cell at the time.
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Energy Metabolism Catabolic pathways: disassembly of complex molecules to form simpler products Anabolic pathways: synthesis of more complex compounds from simpler starting materials -provide raw materials for synthesis -provide energy for cell activities in the forms of high-energy phosphates (ATP) and high-energy electrons (NADPH)
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This note was uploaded on 09/18/2008 for the course PCB 3134 taught by Professor Multiple during the Spring '08 term at University of Florida.

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9-12 - Metabolism Metabolism is the collection of...

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