Multiple Choice
In the context of cellular respiration, what is the average number of ATP molecules produced from the complete aerobic oxidation of one molecule of glucose?
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8. Respiration
Introduction to Cellular Respiration
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Why do your cells need oxygen during cellular respiration?
A
To synthesize DNA during cell division
B
To transport carbon dioxide out of the cell
C
To serve as the final electron acceptor in the electron transport chain, allowing ATP production
D
To break down glucose directly in glycolysis
Verified step by step guidance1
Understand that cellular respiration is the process by which cells generate energy in the form of ATP by breaking down glucose and other molecules.
Learn that oxygen plays a critical role in the electron transport chain, which is the final stage of cellular respiration occurring in the mitochondria.
Recognize that during the electron transport chain, electrons are passed through a series of protein complexes, releasing energy to pump protons across the mitochondrial membrane, creating a proton gradient.
Understand that oxygen acts as the final electron acceptor at the end of the electron transport chain, combining with electrons and protons to form water. Without oxygen, the chain would halt, and ATP production would be severely reduced.
Connect this concept to the importance of oxygen for efficient ATP production, which powers various cellular processes essential for life.
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