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Mitochondria

OCR AS-level BiologyCell StructureLesson 5 of 26

Mitochondria are the site of aerobic respiration. Aerobic respiration produces ATP a molecule easily broken down to release the energy needed for metabolic reactions. ATP is an immediate energy store.

Very active cells usually contain a lot of mitochondria.

Diagram

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Key terms in this lesson

organelle
A membrane-bound structure within a cell with a specific structure suited to a specific function.

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