Originally Posted by ArmchairGeneral

Perhaps you're referring to the Calvin cycle, also known as the dark, or light-independent reactions. The citric acid, or Krebs cycle is basically the opposite, takes acetyl CoA and produces CO2 and and a variety of energy carrying molecules. Also, the H2O is not consumed in the same cycle that the CO2 is consumed. The glucose (C6H12O6) is actually produced by adding hydrogen to the CO2. The cracking of H2O takes place in a separate cycle, the light-dependent reactions, where H2O is used as a source of electrons, and a certain corrosive, toxic byproduct is made- oxygen.

Don't knock modern colleges too hard- they may be a bunch of liberal weanies for the most part, but you can get a pretty good science education, if you want it.