During cellular respiration, one glucose molecule (C₆H₁₂O₆) produces 6 molecules of carbon dioxide (CO₂). Therefore, if three glucose molecules undergo cellular respiration, the total amount of CO₂ produced can be calculated as follows:
\[ 3 \text{ glucose molecules} \times 6 \text{ CO₂ molecules/glucose} = 18 \text{ CO₂ molecules} \]
So the correct answer is 18.
1 answer