Biology 9700 · AS & A Level · Fluid mosaic membranes

Fluid mosaic membranes — practice question

The diagram illustrates the fluid mosaic model of membrane structure. Structures 1, 2, 3 and 4 are kinds of molecule. Which kinds of molecules are always the same?

  • A1, 2 and 3
  • B1 and 4
  • C2 and 3 only
  • D4 only

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