In aerobic cellular respiration:

1. all oxygen in water given off comes from the water used in the process
2. all oxygen in water given off comes from the glucose dismantled in the process
3. all oxygen in water given off comes from the oxygen gas acquired from the air during breathing
4. oxygen in water given off comes from both the water used in the process and the glucose dismantled in the process
Subtopic:  Aerobic Respiration |
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