Biology 9700 · AS & A Level · Fluid mosaic membranes

Fluid mosaic membranes — practice question

Which combination of factors would lead to the cell surface membrane having the lowest fluidity? In every option, the factors named are shown as having increased.

  • Aproportion of short fatty acid chains; distance between phospholipid molecules
  • Bproportion of long fatty acid chains; proportion of phospholipids with saturated fatty acid chains
  • Cproportion of short fatty acid chains; proportion of phospholipids with unsaturated fatty acid chains
  • Dproportion of phospholipids with unsaturated fatty acid chains; temperature

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