What’s the primary function of oxygen in aerobic respiration

Answer Choices:

A. To act as a receptor for carbon dioxide molecules

B. To donate electrons to all other particles within cellular respiration

C. To give short bursts of energy to muscle cells

D. To improve the efficiency of chemical reactions

D. To improve the efficiency of chemical reactions

Explanation:

Aerobic respiration is much more efficient than anaerobic respiration,

producing much more ATP. This is primarily because oxygen acts as an

excellent electron acceptor, allowing chemical reactions to proceed

more efficiently. The primary products of aerobic respiration are carbon

dioxide and water.

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P.S. I also took the exam and this was the correct answer.

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the answer would be 3