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Nucleus is a key organelle in a eukaryotic cell and acts as the control center for cell activities. Nucleus is separated from the rest of the cell by nuclear membrane. Cell nucleus contains most of the genetic material of the cell and its functions include safeguarding this material and controlling its expression. During the cell cycles or its division, genetic material is copied and passed onto daughter cells. It is through the expression of genetic material that the cell gets instruction to do something. In absence of such instructions, the cell would be unable to perform any functions. Think about what will happen if we do not get any instructions based on our genetics, we would be unable to perform any of our designated functions, such as growth, synthesis of molecules, reproduction, etc. Genetic material, its protection and expression is important for our survival and development.
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