Animals obtain energy through a series of chemical reactions in which sugar (C6H12O6) and oxygen gas (O2) are reactants. This process produces water…

Animals obtain energy through a series of chemical reactions in which sugar (C6H12O6) and oxygen gas (O2) are reactants. This process produces water (H20) and carbon dioxide (CO2) as waste products. Suppose you wanted to find out whether the oxygen in CO2 come from sugar or oxygen gas. How might you use a radioactive isotope to find out?