Does the Krebs cycle produce carbons?

The Krebs Cycle does not produce carbon atoms; in fact, it requires them in the form of glucose (typically). The KrebsCycle, or Citric Acid Cycle, is the cycle that essentially makes a useful form of energy for our bodies in the form of ATP (Adenosine Tri-phosphate). One of the byproducts is 2 molecules of carbon dioxide, so you actually use up 2 carbon atoms from the original 6 (from glucose) in order to produce ATP.

Sources: http:/www.wisegeek.com

Also, I have my B.S. in Biological Sciences, so I have studied basic physiology like this for 4 years.

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