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==Key Stage 3=====Meaning===The [[nucleus]] is the part of the [[Cell (Biology)|cell]] containing that contains [[DNA]] which provides instructions for how the [[Cell (Biology)|cell]] should behave. Singular [[Noun]]: '''Nucleus'''Plural [[Noun]]: '''Nuclei''' ===Function===The [[nucleus]] controls the [[cell]]. ===About the Nucleus===: The '''nucleus''' contains the genetic material of a cell.: '''Nuclei''' are found in [[Plant Cell|plant cells]] and [[Animal Cell|animal cells]] but not in [[Bacteria]]. ===Examples===