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Which step in cellular respiration is directly dependent on the availability of oxygen? in other words, which step specifically uses oxygen?

User Ajinkya Patil
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Answer:

Electron Transport Chain

It is the only part of cellular respiration that directly consumes oxygen; however, in some prokaryotes, this is an anaerobic pathway. In eukaryotes, this pathway takes place in the inner mitochondrial membrane. In prokaryotes it occurs in the plasma membrane.