What happens to carbon dioxide during respiration?
Per glucose molecule, 2 moles of carbon dioxide are released
during the link reaction of respiration when pyruvate is oxidised
to acetyl coA and 4 moles are also released in the Krebs cycle when
citrate is oxised to oxoloacetate. This is because each molecule of
glucose is broken down into 2 molecules of pyruvate, each of which
perform the link reaction and the Krebs cycle.