Lamellar models, Biology


  1. According to James Danielly & Hugh Davson (1935) cell membrane consists of 4 layers P-L-L-P.
  2. Molecules of phospholipid has amphipathic nature, i.e. it has polar & non-polar ends.
  3. Polar end is head consists of glycerol, which is attached to protein layer by Hydrogen & Ionic bonds (strongest bond) or Electrostatic forces.
  4. Non-polar end is tails consists of fatty acids, which are attached to each other by Vander wall forces (weakest bond) or Hydrophobic or Lipophilic interactions.
  5. Outer & inner surfaces of membrane consists of globular hydrated a-protein.

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Posted Date: 10/5/2012 6:22:40 AM | Location : United States

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