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Cells have many structures inside of them called organelles. These organelles are like the organs in a human and they help the cell stay alive. Each organelle has it's own specific function to help the cell survive. The nucleus of a eukaryotic cell directs the cell's activities and stores DNA.
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Answer: where are the options?
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Changes in gene expression
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It helps the body stay cool; It helps maintain stability and health inside the body
