At the End of Cellular Respiration, Oxygen Combines with Electrons

question 6

Multiple Choice

At the end of cellular respiration, oxygen combines with electrons of a very low energy level. How are the specific properties of oxygen beneficial to the organism that uses it as a final electron acceptor?

• A) Oxygen is highly reactive and readily accepts electrons.
• B) Oxygen is strongly electronegative and helps pull the electrons through the electron transport chain.
• C) Oxygen allows a maximum output of energy for ATP synthesis.
• D) Oxygen is the only molecule that can act as a final electron acceptor.
• E) Oxygen is highly reactive and readily oxidizes methane.

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