Monday, September 28th

Monday, September 28th - Monday, September 28th I....

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Announcements: Problem Set 1 is due on Wednesday I. Chemical constituents a. Carbons and energy trophic levels b. Other macronutrients c. Bacterial nutrition II. 50% Carbon 1) 20% Oxygen = but these are associated with others = don't look at oxygen as nutrients 2) 14% for Nitrogen = not as much as Carbon 3) 8% Hydrogen =which also associated with others 4) 3% Phosphorus = mixed = some are monomers, some are polymers 5) 1% Sulfur 6) And the remainder are other ions 7) Chemical composition of a typical bacterium - If any of the major compounds is limiting => the cell can't grow - Ions are the most limited elements in the universe because they are soluble - What are the chemical elements of the cell and how much do we have to make? a. We want to make two cells from one, but before we can do that => we have to enlarge the original cell ==> we have to consider the chemicals that interacts with the cell, as well as the energy that is coming from the surrounding. 1. Heterotroph : must obtain carbon as greater or equal to 2C units in length and in a reduced state = C2H4O, acetaldehyde, C2H4O2, acetate, C2H6O, ethanol = dependent on the carbon source = it has to get it from somewhere else
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This note was uploaded on 04/02/2010 for the course MIC 140 taught by Professor Meeks,singer during the Spring '09 term at UC Davis.

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Monday, September 28th - Monday, September 28th I....

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