MITOCHONDRIA

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• Mitochondria have two membranes (not one as in other organelles).
• The outer membrane covers the organelle and contains It
• The inner membrane folds over many times (cristae).

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• found in the cytoplasm of almost all eukaryotic cells.
• ells with clearly defined nuclei.

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The number depends on what the cell needs to do.
If the purpose of the cell is to transmit nerve impulses, there will be fewer mitochondria than in a muscle cell that needs loads of energy.

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