The primary role of oxygen in cellular respiration is to

The primary role of oxygen in cellular respiration is to 






A) yield energy in the form of ATP as it is passed down the respiratory chain.
B) act as an acceptor for electrons and hydrogen, forming water.
C) combine with carbon, forming CO2.
D) combine with lactate, forming pyruvate.
E) catalyze the reactions of glycolysis.






Answer: B


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