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1 1 Lecture 8 Enzymes and Catabolism Sept 10 2008 Macromolecules Office phone: 231- 9708 LS-1 room 215 2 Microbial Nutrition Nutrition: the processing of food by microorganisms including the types of food nutrients they require as well the methods by which these are assimilated and utilized Macronutrients:( C, H,O, N, P, S, K, Mg, Na, Ca, and Fe) Siderophores: Citric acid Aspergilus nigrans Micronutrients: generally metal elements (Cr, Co, Cu, Mn, Mo, Ni, Se, W, B, Zn, and Fe Growth Factors Culture Media simple definition : the nutrient materials (liquid or solid base) with are used to grow microorganisms in the laboratory : Chemically defined or Undefined 3 Metabolism ATP (adenosine triphosphate) stores the energy generated by catabolic reactions and makes it available for anabolic reactions : 6 main nutrients - carbohydrate, protein, fat, vitamins, minerals and water Most microorganisms oxidize carbohydrates as the major source of cellular energy Energy can also be derived from the breakdown of fats and proteins Exergonic – energy released from bonds Endergonic – energy consumed to form bonds
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2 4 Enzymes- Biological catalyst for metabolic reactions
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This note was uploaded on 02/11/2009 for the course BIOL 2604 taught by Professor Sldaniel during the Spring '08 term at Virginia Tech.

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