Which of the following statements best describes the primary role played by oxygen in cellular respiration? 1.it serves as an acceptor for carbon, forming co2 in the citric acid cycle. 2.it serves as the final acceptor for electrons from the electron transport chain. 3.it yields energy in the form of atp as it is passed down the electron transport chain. 4.it oxidizes glucose to form two molecules of pyruvate.

Answer;

2.It serves as the final acceptor for electrons from the electron transport chain.

Explanation;Cellular respiration is the process by which glucose or other organic compounds such as fructose are broken down to generate energy in the form of ATP, that is required to drive cellular or body processes.Cellular respiration takes place in the presence of oxygen and occurs in three stages, namely; glycolysis, kreb's cycle and electron transport chain. The end products of cellular respiration is energy in the form of ATP, and water and carbon dioxide as a byproduct.The oxygen consumed during cellular respiration is directly involved in accepting electrons at the end of the electron transport chain

2hydrogen and 1 covalent