Answer :
Muscle cells and nerve cells have more mitochondria because they need more energy to function correctly. Mitochondria are concentrated more in cells that consume high energy which include nerve and muscle cells.
Muscle cells have higher energy demands compared to skin cells and therefore have more mitochondria concentration compared to skin cells.
The reason why some cells have more mitochondria than others is that some cells have more energy demands compared to others making mitochondria more concentrated in cells with high energy needs and less in low energy demanding cells.
Muscles need more energy compared to nerve cells and therefore muscles have more mitochondria compared to nerve cells.
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