When is oxygen used in cellular respiration?

Answer 1

I. Cellular Respiration: breaking down sugar in the presence of oxygen (aerobic).

Photosynthesis (you recall...) is the process by which CO2 and H2O are used to make sugars and starches.

During Cellular Respiration, sugar is broken down to CO2 and H2O, and in the process, ATP is made that can then be used for cellular work.

The overall reaction for cellular respiration: (does this reaction look familiar? Overall, it is the reverse reaction of photosynthesis, but chemically, the steps involved are very different.)

C6H12O6 + 6O2 -------------------> 6CO2 + 6H2O + ~38 ATP

Answer 2

Oxygen is used in cellular respiration during the electron transport chain phase to help generate ATP, the energy currency of the cell. This occurs in the mitochondria of eukaryotic cells. Oxygen acts as the final electron acceptor in the electron transport chain, allowing for the efficient production of ATP through a process called oxidative phosphorylation.

Answer 3

Oxygen is needed for the last step.That one is electron transport chain