Eukaryotic Cells

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  • Created by: Katy **
  • Created on: 27-09-14 13:25
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  • Eukaryotic Cells
    • true nucleus
    • all organism (bar bacteria)
    • Plasma Membrane
      • phospholipid bilayer & proteins
      • controls entry & exit of molecules
    • Nucleus
      • contains DNA
        • can't escape through nuclear pores
      • Nuclear membrane
        • protects DNA
        • DNA is wound around histones (proteins)
      • Nucleoplasm
        • contains chromatin
      • Nucleolus
        • makes rRNA
          • protien
      • Nuclear pores
        • transport mRNA, rRNA & ribosomes
      • controls all chemical reactions
    • Endoplasmic Reticulum
      • network within a cell
      • Rough ER
        • studded with ribosomes
          • synthesise proteins
      • membrane channels
        • cisternae
      • Smooth ER
        • no ribosomes
        • processes lipids
    • Ribosomes
      • joins acids together to make proteins
        • protein synthesis
      • protein & rRNA
      • made in Nucleolus
      • found in
        • Cytoplasm
        • RER
      • in 2 sub-units
        • small
        • large
    • Golgi Apparatus/Body
      • modifies & packages
        • protein
        • lipids
      • can add carbohydrate
        • gylcoprotein
      • vesicles
        • bud off Golgi
        • transport proteins to cell membrane
          • fuse & release contents
            • exocytosis
        • go to cytoplasm
        • lysosomes
          • "suicide bags"
          • contain digestive enzymes
    • Mitochondrion
      • aerobic respiration
      • double membran
        • outer
          • smooth
        • inner
          • folded into cristae
            • increase surface area
          • studded with stalked particles
            • site of ATP synthesis
      • matrix
        • inner fluid
        • contains small circular strands of DNA
      • own reproduction
    • Centriole
      • micro-tubules of protein
      • only 2 in a cell
      • divide by mitosis
      • linked by threads of proteins
    • Chloroplasts
      • photosynthesis
      • double membrane
        • folded inner
          • hollow disks
        • smooth outer
        • thylakiod
          • folded into thylakiod disks
            • stacked into grana
            • flat
              • large surface area
                • more chlorophyll
              • circular
      • stroma
        • fluid
        • contains
          • starch grains
          • ribosomes
          • circular DNA
    • Vaculoe
      • tonoplast bound membrane sack
      • filled with sap
      • keeps cell rigid / turgid
    • Undulipodium
      • Flagellum
        • longer than cell
        • only 1 or 2
      • Cilia
        • smaller
        • many
      • tail used for mobility
      • extension of cytoplasm
      • full of micro-tubules & motor proteins
    • Microvilli
      • extension of cell memebrane
      • increase surface area for absorption
    • Cell Wall
      • plant
        • cellulose
      • gives cell rigidity & strength
      • plasmodesmata
    • Cytoplasm
      • contains
        • materials for cell to function

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