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Question

A unit membrane is absent over

A
Lysosome
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B
Microbody
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C
Golgi Apparatus
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D
Ribosome
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Solution

The correct option is B Ribosome
  • Unit membrane refers to the limiting membrane of cells and cellular organelles which is composed of 3-layered structure- an inner lipid layer and two outer protein layers.
  • This unit membrane surrounds most of the cellular organelles (Golgi apparatus, microbody, lysosomes etc.).
  • Ribosomes are non-membranous cellular organelle thus, it lacks a unit membrane,
  • So, the correct answer is 'Ribosome'.

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