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Free Energy / ATP

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Free Energy / ATP

Postby UMich1344 » Tue Sep 29, 2009 4:08 am

Which compound has the highest free energy and produces the most ATP when oxidized?
A. acetyl CoA
B. glucose
C. pyruvate
D. carbon
E. both pyruvate and carbon



I've spent the past hour looking for this answer within my textbook or through Google searches. I can't seem to locate any information regarding the free energy that compounds have nor any information on the ATP produced during the oxidation of these compounds. Can someone please shed some light on this question by either explaining how I can figure it out on my own or leading me in the right direction in my research for the answer?

Any help is greatly appreciated.
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Postby JackBean » Tue Sep 29, 2009 7:49 am

Hi,

well, the enrgy is released by oxidation of all of these compounds (well, except of the carbon;). So, the more energy you need, the more oxidise you must. As the finnal product is always CO2 (let's say so), than, the more reduced form you have, the more energy you can gain ;)
Basically, you can look to the saccharide metabolism and see, which substance is where and by that you can say, that it will produce more ATP, as it take longer path to metabolise it ;)
Anyway, you won't find carbon in these pathways, but basically it's the most reduces form from all listed substances ;)
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
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