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Multiple Choice
Why is oxygen essential to energy production during cellular respiration?
A
Oxygen is used to break down carbon dioxide.
B
Oxygen directly converts glucose into ATP.
C
Oxygen is required for glycolysis to occur.
D
Oxygen acts as the final electron acceptor in the electron transport chain.
Verified step by step guidance
1
Understand the process of cellular respiration, which consists of glycolysis, the citric acid cycle, and the electron transport chain.
Recognize that oxygen is not involved in glycolysis, as glycolysis is an anaerobic process that occurs in the cytoplasm and does not require oxygen.
Identify the role of oxygen in the electron transport chain, which is the final stage of cellular respiration occurring in the mitochondria.
Learn that during the electron transport chain, electrons are transferred through a series of proteins embedded in the inner mitochondrial membrane.
Conclude that oxygen acts as the final electron acceptor at the end of the electron transport chain, combining with electrons and protons to form water, which is essential for the production of ATP.