Cell structures

Cards (15)

  • Humans
    • Made up of eukaryotic cells
    • Have nuclei and membrane bound organelles
  • Ultrastructure
    More detailed structure of cells that can be obtained by using a res
  • Mitochondria
    • Double membrane called the envelope
    • Inner membrane is folded to form projections called cristae
    • Contains matrix with enzymes coded for respiration
  • Nucleus
    • Contains chromatin and nucleolus
  • Cell membrane
    • Double membrane called the envelope
    • Enables molecules to enter and leave the cell
  • Rough endoplasmic reticulum
    1. Series of channels enclosed by ribosomes on the surface
    2. Folds and processes proteins made on the ribosomes
  • Smooth endoplasmic reticulum
    • System of membrane bound, sacs that produces and processes lipids
  • Golgi apparatus
    • Series of flattened, curved sacs with vesicles surrounding the edges
    • Processes and packages proteins and lipids
    • Produces lysosomes
  • Centrioles
    • Hollow cylinders containing a ring of microtubules arranged at right angles to each other
    • Involved in producing spindle fibres for cell division
  • Ribosomes
    • Composed of two sub units
    • Site of protein production
  • Lysosomes
    • Vesicles containing digestive enzymes bound by a single membrane
  • Prokaryotic cell components
    • Cell wall
    • Capsule
    • Plasmid
    • Flagellum
    • Pili
    • Ribosomes
    • Mesosomes
  • Mesosomes
    Infoldings of the inner membrane which contain enzymes required for respiration
  • Viruses
    • Non-living structures consisting of nucleic acid (DNA or RNA) enclosed in a protective protein coat called the capsid, sometimes covered with a lipid layer called the envelope
  • Cells of multicellular organisms are organised into tissues, tissues into organs and organs into systems