I am getting conflicting answers all over the web about the reactants and products of cellular respiration. Does anyone know the exact major reactants and products? Help?

Question

anonymous · Answer

Thanks Rogue. I know the formula. I am having heck trying to get accurate Reactants and Products for each stage. IE. Glycolysis, Acetyl COa formation, Citric Acid Cycle, and Electron Transport

anonymous · Answer

If you have 3 hours freetime and can withstand a indian dialect, here are three Biochemistry lectures covering metabolism in order. http://freevideolectures.com/Course/2524/BioChemistry/25 http://freevideolectures.com/Course/2524/BioChemistry/26 http://freevideolectures.com/Course/2524/BioChemistry/27 These are about Electron phospolyeration http://freevideolectures.com/Course/2524/BioChemistry/23 http://freevideolectures.com/Course/2524/BioChemistry/24

rogue · Answer

Glycolysis$$_{C_6H_{12}O_6 + 2 ATP + 2 ADP + 2 P_i + 2 NAD^+ \rightarrow 2 pyruvate + 4 ATP + 2 NADH + H_2O}$$

rogue · Answer

Pyruvates to Acetyl CoA$$2 Pyruvate + 2 coenzyme A + 2 NAD^+ \rightarrow 2 acetyl CoA + 2 CO_2 + 2 NADH$$

rogue · Answer

Citric Acid Cycle$$_{2 Acetyl CoA + 6 NAD^+ + 2 FAD + 2 ADP + 2 P_i + 2 H_2O \rightarrow 4 CO_2 + 6 NADH + 2 FADH_2 + 2 ATP + H_2O}$$

rogue · Answer

Electron Transport chain reaction for NADH and FADH2$$NADH + 3 ADP + 3 P_i + \frac {1}{2} O_2 \rightarrow NAD^+ + 3ATP + H_2O$$$$FADH_2 + 2 ADP + 2 P_i + \frac {1}{2} O_2 \rightarrow FAD^+ + 2 ATP + H_2O$$

rogue · Answer

Sorry if its hard to read the glycolysis & citric acid cycle reaction, they wouldn't fit if they were to be in normal font...

anonymous · Answer

Thank you very much. I have looked everywhere, and I found some of what you have in areas and then some of the others in other areas, I just couldnt make sense of them all. Appreciate your help. Your the bomb!

rogue · Answer

Your welcome :) Different sites have diffferent versions of the formula, but the overall idea is still the same. These are the complete reactions from my textbook.

anonymous · Answer

It is important to note that the amount of ATP produced is not a fixed number, usually what is presented is an optimal number that we rarely reach. This is due to protons leaking from the proton gradient and also due to uncoupling proteins that are sometimes active in the cell. Furthermore cataplerosis occurs often, where intermediaries in the krebs cycle are used for other cellular processes.

anonymous · Answer

Thanks CuddleP