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6 Cards in this Set
- Front
- Back
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Nuclear envelope
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Double membrane surrounding nucleus. Outer membrane with ER of the cell + often has robosomes on it's surface. Contorl entry/exit of material in/out nucleus + contains reactions taking place within it.
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Nuclear pores
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Allow the Passage of large molecules (mRNA) out of the nucleus. 3000 pores in each nucleus + each 40-100 nm in diameter
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Nucleoplasm
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Granular, jelly like material that makes up the bulk of the nucleus
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Chromoatin
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The DNA found withing nucleoplasm. This is the diffuse form that chromosomes take up when the cell is not dividing
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Nucleolus
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Small spherical body within the nucleoplasm. It namufactures ribosomal RNA and assembles ribosomes
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Funtions of a nucleus
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+ act as control centre of the cell through the production of mRNA and hense protein synthesis
+ Retain the genetic material of the cell in the form of DNA/chromosomes +Naufacture ribosomal RNA and ribosomes. |
