lecture_2_synopsis_-_2009

lecture_2_synopsis_-_2009 - MIC 140 Bacterial Physiology...

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MIC 140 Bacterial Physiology 09-28-09 Lecture 2 Synopsis. Introduction to the process of making two cells from one: basic nutrition and cellular structures to be synthesized. Chapter 1. I. Overview of nutrition and energy metabolism = fueling reactions to build a cell. 1. Elemental composition of Escherichia coli , a model microorganism. (Data from Stanier, Adelberg and Ingraham, The Microbial World, 1986, Prentice Hall) Element Percentage of dry weight Carbon 50 Oxygen 20 Nitrogen 14 Hydrogen 8 Phosphorus 3 Sulfur 1 Ions (potassium, sodium, calcium, magnesium,chloride, iron 1.0 All others 3.0 2. Trophic level organization with respect to carbon and energy sources for growth. A. Energy source or electron source B. Carbon source Phototroph Autotroph Lithotroph Heterotroph Organotroph 3. Other macronutrients. A . Nitrogen : Ammonium (NH 4 + ), assimilation versus ammonification or nitrification. Nitrate/nitrite (NO
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This note was uploaded on 12/02/2009 for the course MIC 140 taught by Professor Meeks,singer during the Spring '09 term at UC Davis.

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lecture_2_synopsis_-_2009 - MIC 140 Bacterial Physiology...

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