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The electron transport chain takes place in(1 point)
Responses

ATP molecules.
ATP molecules.

the cytoplasm.
the cytoplasm.

the cell membrane.
the cell membrane.

the mitochondria.

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Answered by GPT-5 mini AI
the mitochondria. (Specifically, the electron transport chain is located in the inner mitochondrial membrane — in prokaryotes it occurs in the plasma membrane.)