Question

what is the complete formula for cellular respiration?
a $\ce{c6h12o6 + n2 -> ch4 + h2o + energy}$
b $\ce{c6h12o6 + ch4 -> n2 + h2o + energy}$
c $\ce{c6h12o6 + co2 -> o2 + h2o + energy}$
d $\ce{c6h12o6 + o3 -> co2 + h2o + energy}$

Explanation:

Cellular respiration is the process where glucose (\(C_6H_{12}O_6\)) reacts with oxygen (\(O_2\)) to produce carbon dioxide (\(CO_2\)), water (\(H_2O\)), and release energy. Let's analyze each option:

• Option A: Involves \(N_2\) (nitrogen) and produces \(CH_4\) (methane), which is incorrect for cellular respiration.
• Option B: Involves \(CH_4\) (methane) and produces \(N_2\) (nitrogen), not related to cellular respiration.
• Option C: Has \(CO_2\) as a reactant, but in cellular respiration, \(CO_2\) is a product, and \(O_2\) should be a reactant, so this is reversed.
• Option D: Glucose (\(C_6H_{12}O_6\)) reacts with oxygen (\(O_2\)) to form carbon dioxide (\(CO_2\)), water (\(H_2O\)), and energy, which matches the cellular respiration equation.

Answer:

D. \( C_6H_{12}O_6 + O_2
ightarrow CO_2 + H_2O + energy \)