Talk:Pre-Medicine Program - Cell Filament Systems

From CellBiology

History Timeline


(List from Nature Cytoskeleton Timeline)

Links: Nature Cytoskeleton Milestones | Nature Cytoskeleton Timeline | Nature Cytoskeleton Collection | PDF of all Milestones | Nature Cytoskeleton Library


Reviews

Approximate Fiber Diameter

Remember these values are only approximate and may differ depending on preparation technique.

  • collagen single 1.5 nm bundled to 1 to 10 µm
  • DNA 2 nm
  • membrane 5 nm
  • microfilament 7nm
  • intermediate filament 10 nm
  • microtubule 25 nm


  • membrane permeable to
    • gases - O2 and CO2,
    • small uncharged polar molecules - urea and ethanol
    • these molecules can also cross cellular membranes by passive diffusion unaided by transport proteins