during respiration _____

A.) carbon dioxide is used to break down glucose into energy
B.) oxygen is used to break down glucose into energy
C.) carbon dioxide and water are combined to make glucose
D.) oxygen and water are combined to make water

Respuesta :

C6H12O6+6O2--->6CO2+6H2O+energy

Oxygen(O2) is used to break down glucose(C6H12O6) into energy so the answer is b

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