If you could track all of the carbon atoms that are present in a sugar molecule that undergoes cellular respiration, where would those carbon atoms end up?

Mitochondria

Explanation:

This is where the citric acid metabolic pathways of cellular respiration occur. After the glycolysis process happens in cell cytoplasm to form pyruvate from glucose molecules, the pyruvate is converted to acetyl-CoA that enters the mitochondria for the TCA cycle. The TCA produces more ATPs from the energy molecule. The carbon atoms will ultimately be expelled from the cell as carbon dioxide.