Cell Organelles

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  • Cell Organelles
    • Cell membrane
      • The cell surface is made up of two layers of phospholipids
      • It is embedded with proteins, such as receptors on the outer surface
      • It regulates movement of substances in and out odf the cell
      • The membrane seperates itself from external environments
      • Most organelles are surrounded by their own membrane
    • Nucleus
      • Large and round organelle surrounded by a double membrane, called a nuclear envelope
      • The nuclear envolope contains large nuclear pores to allow exchange of materials between the nucleus and cytoplasm
      • DNA is found in the nucleus
      • It contains nucleous, this produces ribsomes
    • Ribsomes
      • Consists of two subunits, one large and one small
      • Made of protein and ribsomal RNA
      • They float free or attach to endoplasmic retculum
      • Ribsomes are the site of protein synthesis
    • Mitochondrion (plural: mitochondria)
      • It is a oval shape with a double membrane
      • The inner membrane is highly folded in to cristae, which increases surface area
      • The matrix is a viscous liquid which contains enzymes


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