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The part of the cell membrane that acts as a barrier are the Hydrophobic tails!

Hydrophobic heads

Hydrophilic molecules

  • A hydrophile is a molecule or other molecular entity that is drawn to water molecules and is dissolved by them.
  • The phosphate group is a hydrophilic, negatively charged polar head. The uncharged, nonpolar tails of the fatty acid chains are hydrophobic.
  • Hydrophobic heads acts as a barrier to hydrophilic molecules entering the cell

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