Which of the following statements is true about the role of oxygen in cellular respiration? it reacts with water. it is one of the ending compounds. it is one of the beginning compounds. it reacts with carbon dioxide.

It is one of the beginning compounds.

This is the answer for many reasons. First off, it is not one of the ending compounds. It is only the end compound for photosynthesis. Second, it does not react to water as that is yet again photosynthesis. It does not react with carbon dioxide as carbon dioxide is what initially creates oxygen within cellular respiration.

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