09WasteH2OBalTemplate

09WasteH2OBalTemplate - Title: Waste and Water Balance I....

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Title: Waste and Water Balance I. Waste and Water Balance Need to regulation of cell and blood plasma ѱ s (osmolarity), as well as ion concentrations Complicated by: o Production of waste from metabolism o N from protein and nucleic acid Metabolism of carbohydrates and fats not a problem because these produce CO 2 and H 2 O. A. Nitrogenous Waste 1. Plant vs. Animal Plant: Transamination o Transfers NH 2 to another molecule o Store in vacuole, lost when leaves stop o Convert to toxic compound atropine, strychnine, curare, nicotine, etc. Animal: Deamination o Remove NH 2 group o Produces waste ammonia (NH 3 ) o Can be converted to other compounds B. Types of Nitrogenous Waste 1. Ammonia (NH 3 ) Produced by aquatic inverts, bony fish Highly toxic Released directly into surrounding fluid 2. Uric Acid (C 3 H 4 N 4 O 3 ) Produced by insects, birds and reptiles (humans also produce some in liver; excess causes gout) Can be excreted as a solid, so less water lost
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This note was uploaded on 04/22/2008 for the course BIOL 111 taught by Professor Dr.zielinski during the Spring '08 term at Purdue University.

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09WasteH2OBalTemplate - Title: Waste and Water Balance I....

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