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    Density of mitochondria taken from the tissue of a marathon runner

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    I do not quite understand what or how the density of mitochondria would be any different in tissue taken from the legs of a marathon runner or the biceps of a weight lifter vs. a couch potato.

    Can you explain this concept?

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    https://brainmass.com/biology/cell-structure/density-mitochondria-tissue-runner-48167

    Solution Preview

    To do work, the muscle cell has to produce energy to be used in the contraction of the muscle cell, thereby doing the work. This energy production - mainly by "burning" sugar, fat or protein is done in the mitochondriae (Latin plural of mitochondria). These are cell organells and the "power stations" of the cell. They consume ...

    Solution Summary

    The expert determines the density of mitochondria taken from a tissue of a marathon runner versus a couch potato.

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