Eukaryotic cells have two isozymes of aconitase

• The mitochondrial isozyme (convert citrate to isocitrate in the citric acid cycle)

• The cytosolic isozyme 

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In highly polarized cells, mitochondria can move long distances being propelled along microtubule tracks

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In other cells, mitochondria remain fixed at points of high energy demand.

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In mitochondria, the metabolism of sugars is complete: allows 15 times more ATP to be made from a sugar than by glycolysis alone.

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Functions of Mitochondria-

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mtDNA is located in the mitochondrial matrix, and in the rapidly growing cells, mtDNA is often seen in regions devoid of densely stacked cristae.