In the structure of the cell membrane,the out | vedclass

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(B) The cell membrane is composed of a phospholipid bilayer.Each phospholipid molecule consists of a polar head and two non-polar tails.The polar head

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Polar hydrophilic

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(B) The cell membrane is composed of a phospholipid bilayer.Each phospholipid molecule consists of a polar head and two non-polar tails.The polar head is hydrophilic (water-loving),which faces the aqueous environment outside and inside the cell.The non-polar tails are hydrophobic (water-fearing) and are directed towards the interior of the membrane,away from water.Therefore,the outer head of the lipid molecule is polar and hydrophilic.

In the structure of the cell membrane,the outer head of the lipid molecule is:

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