Lecture 7 phototrophy

Lecture 7 phototrophy - Can this reaction: CH 3-CH 2-COO- +...

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Unformatted text preview: Can this reaction: CH 3-CH 2-COO- + 3H 2 O CH 3-COO- + HCO 3- + 3H 2 G = +76 kJ / mol Be used to power life? H2 is consumed by a methanogen. G for the methanogen is about -130 kJ/mol. Each of the partners in this syntrophic relationship gets about -20 kJ/mol. There are many favors oF syntrophy . Some organisms use modied pili as nanowires to transmit chemicals or even charges. Geobacter metalloreducens produces pili when the only available e- acceptor is insoluble Fe(III) Lovley et al, Nature 2005 Growth (open symbols) and Iron reduction (closed symbols) is entirely dependent upon making pili: circles = cells with pili; triangles = cells with the pil genes deleted. TEM shows the pili tangled in with particles of insoluble Fe(III)oxide. Lovley et al, Nature 2005 Phototrophy: Using light energy to generate ATP. Photosynthesis Chemotrophy: Using redox reactants from the environment to generate ATP....
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Lecture 7 phototrophy - Can this reaction: CH 3-CH 2-COO- +...

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