Final answer:
For two molecules of glucose undergoing aerobic cellular respiration, 12 molecules of oxygen are required to produce ATP, carbon dioxide, and water.
Step-by-step explanation:
The question 'how many O₂ molecules are required for 2 glucose molecules cellular respiration?' relates to the stoichiometry of the cellular respiration process in biology. According to the overall chemical reaction for aerobic cellular respiration, one molecule of glucose (C₆H₁₂O₆) combines with six molecules of oxygen (O₂) to yield six molecules of carbon dioxide (CO₂) and six molecules of water (H₂O). Therefore, for two molecules of glucose, the amount of oxygen required would be doubled.
For each molecule of glucose:
- 1 C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O
For two molecules of glucose:
- 2 C₆H₁₂O₆ + 12 O₂ → 12 CO₂ + 12 H₂O
Thus, for two molecules of glucose, 12 molecules of oxygen are required to complete the respiration process.