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==Key Stage 3=====Meaning===[[File:Cell.png|right|300px|thumb|The '''nucleus''' can be seen in the centre of this [[Cell (Biology)|cell]].]]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 (Biology)|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==={| class="wikitable"|-|[[File:OnionCells.png|center|300px]]|[[File:MuscleCells.png|center|300px]]|-| style="height:20px; width:300px; text-align:center;" |The '''nuclei''' of these cells can be seen stained blue.| style="height:20px; width:300px; text-align:center;" |The '''nuclei''' of these cells is a darker pink than the rest of the cells.|-|[[File:SpermCellClipart.png|center|200px]]|[[File:PalisadeCellClipart.png|center|150px]]|-| style="height:20px; width:300px; text-align:center;" |The '''nucleus''' in this [[Sperm Cell|sperm cell]] is very large compared to the [[Cell (Biology)|cell]].| style="height:20px; width:300px; text-align:center;" |A picture of a [[Palisade Cell|palisade cell]] showing several parts including the '''nucleus'''.|} ==Key Stage 4=====Meaning===A '''nucleus''' is a [[Membrane Bound Organelle|membrane bound organelle]] found in [[Eukaryotic Cell|eukaryotic cells]] containing the [[DNA]]. ===Function===: The '''nucleus''' contains [[DNA]] which controls the actions of the [[Cell (Biology)|cell]] and provides the information to make copies of the [[Cell (Biology)|cell]]. ===About the Nucleus===: The '''nucleus''' contains [[gene]]s which determine which [[protein]]s are [[Protein Synthesis|synthesised]] in the [[Cell (Biology)|cell]].: During [[mitosis]] before the [[Cell (Biology)|cell]] [[Cell Division|divides]] the [[membrane]] of the '''nucleus''' [[dissolve]]s to release two sets of [[chromosome]]s which then form two identical '''nuclei'''.: '''Nuclei''' are found in [[Animal Cell|animal cells]], [[Plant Cell|plant cells]], [[Fungal Cell|fungal cells]] and [[protist]]s but are not found in [[bacteria]] or [[archaea]]. ===Examples==={| class="wikitable"|-|[[File:OnionCells.png|center|300px]]|[[File:MuscleCells.png|center|300px]]|-| style="height:20px; width:300px; text-align:center;" |The '''nuclei''' of these cells can be seen stained blue.| style="height:20px; width:300px; text-align:center;" |The '''nuclei''' of these cells is a darker pink than the rest of the cells.|-|[[File:SpermCellClipart.png|center|200px]]|[[File:PalisadeCellClipart.png|center|150px]]|-| style="height:20px; width:300px; text-align:center;" |The '''nucleus''' in this [[Sperm Cell|sperm cell]] is very large compared to the [[Cell (Biology)|cell]].| style="height:20px; width:300px; text-align:center;" |A picture of a [[Palisade Cell|palisade cell]] showing several parts including the '''nucleus'''.|} ===References=======AQA==== :[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Nucleus, page 11, GCSE Biology; The Revision Guide, CGP, AQA '']:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Nucleus, pages 110, 132-3, GCSE Physics; Student Book, Collins, AQA '']:[https://www.amazon.co.uk/gp/product/0008158762/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158762&linkCode=as2&tag=nrjc-21&linkId=a0fffa35b3ea49a63404f6704e0df7cc ''Nucleus, pages 12-3, 22, GCSE Chemistry; Student Book, Collins, AQA '']:[https://www.amazon.co.uk/gp/product/1782945954/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945954&linkCode=as2&tag=nrjc-21&linkId=100574c08fbbb64318256eb79ed61a76 ''Nucleus, pages 23, 33, GCSE Biology, CGP, AQA '']:[https://www.amazon.co.uk/gp/product/1782946381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946381&linkCode=as2&tag=nrjc-21&linkId=5ec5fc3f6429e30c1d9ab9bca2bccf93 ''Nucleus, pages 23, 33, GCSE Combined Science Trilogy; Biology, CGP, AQA '']:[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Nucleus, pages 5, 13-17, GCSE Chemistry; Third Edition, Oxford University Press, AQA '']:[https://www.amazon.co.uk/gp/product/0198359373/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359373&linkCode=as2&tag=nrjc-21&linkId=952a73bbb09d222ecc4b50d200679849 ''Nucleus, pages 6-7, GCSE Biology; Third Edition, Oxford University Press, AQA '']:[https://www.amazon.co.uk/gp/product/0008158762/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158762&linkCode=as2&tag=nrjc-21&linkId=a0fffa35b3ea49a63404f6704e0df7cc ''Nucleus; radius, pages 22-3, GCSE Chemistry; Student Book, Collins, AQA ''] ====Edexcel==== :[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Nucleus, page 162, 355, 380, GCSE Combined Science, Pearson Edexcel '']:[https://www.amazon.co.uk/gp/product/1292120215/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120215&linkCode=as2&tag=nrjc-21&linkId=8f96ddb76196848bafdb124354e4cf77 ''Nucleus, page 18, GCSE Chemistry, Pearson, Edexcel '']:[https://www.amazon.co.uk/gp/product/1782945733/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945733&linkCode=as2&tag=nrjc-21&linkId=2a2dbec9db6bf5766c0458d908fa0a52 ''Nucleus, page 49, GCSE Physics; The Revision Guide, CGP, Edexcel '']:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Nucleus, pages 90, 140, GCSE Physics, Pearson Edexcel ''] ====OCR====:[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Nucleus (atoms), pages 20, 170-172, Gateway GCSE Physics, Oxford, OCR '']:[https://www.amazon.co.uk/gp/product/0198359810/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359810&linkCode=as2&tag=nrjc-21&linkId=d768d99f1a06f7c12fab40e5aef85a55 ''Nucleus (cells), page 18, Gateway GCSE Biology, Oxford, OCR '']