What substances are used up as the reactants in cellular respiration?
A.O2 and H2O
B.O2 and C6H12O6
C.CO2 and C6H12O6
D.CO2 and H2O
A.O2 and H2O
B.O2 and C6H12O6
C.CO2 and C6H12O6
D.CO2 and H2O