Aerobic Respiration Equation

Steps:

• Recall the standard equation for aerobic respiration: glucose combines with oxygen to release energy.
• Identify reactants on the left side: glucose (C6H12O6) and oxygen (O2).
• Identify products on the right side: carbon dioxide (CO2) and water (H2O).
• Match to gaps: —1— is glucose, —2— is oxygen, —3— is carbon dioxide, —4— is water.

Why C is correct:

• It matches the formula C6H12O6 + 6O2 → 6CO2 + 6H2O, where cells break down glucose using oxygen to produce CO2 and H2O.

Why the others are wrong:

• A reverses the equation, describing photosynthesis instead.
• B places CO2 as a reactant, which is incorrect for respiration.
• D lists oxygen and water as reactants, inverting the process.

Final answer: C