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Question

Cell membrane is composed of

A
Phospholipid
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B
Nucleoprotein
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C
Polysaccharides
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D
Lipoprotein
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Solution

The correct option is A Phospholipid
  • The cell membrane is a phospholipid bilayer that are selectively permeable membranes which separate the interior of the cells (cell organelles and cytoplasm) from the outside environment or the extracellular space.
  • These biological membranes or bilayers are made up of amphiphilic phospholipids which have both hydrophilic phosphate head and a hydrophobic tail that consists of two fatty acid chains.
  • Lipoproteins are single layered membrane composed of phospholipid molecules on their outside which surrounds a central core.
  • So, the correct answer is 'Phospholipid'.

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