Unit 1 Cell Structure General info about the structure of cells 2.0 / 5 based on 1 rating ? BiologyCellular processes and structureASAll boards Created by: Katie SmithCreated on: 29-03-12 19:14 Nucleus In the Nucleus: Nuclear envelope double membrane surrounding nucleus outer membrane is continuous with rough ER often has ribosomes on surface controls entry and exit of materials in & out of nucleus contains reactions taking place within Nuclear pores allow passage of large molecules e.g. messenger RNA usually around 3000 pores in a nucleus - 40-100nm wid Chromatin DNA found within nucleoplasm chromosomes take this form when not dividing Nucleolus manufactures RNA and assembles ribosomes 1 of 2 Function Of the Nucleus acts as the control centre of the cell - controls production of RNA and hence protein synthesis contains genetic material in the form of DNA or chromosomes manufactures RNA and ribosomes 2 of 2
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