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Question

Gap junctions?

A
Help to stop substances from leaking across a tissue
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B
Perform cementing to keep neighbouring cells together
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C
Provide stretch ability to the epithelium
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D
Facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells
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Solution

The correct option is D Facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells
Cell junctions are cellular structures comprising of multiprotein complexes. They provide adhesion between adjascent cells. They are basically of 4 types.
  • occluding junctions (zona occludens or tight junctions)
  • adhering junction (zona adherens)
  • desmosomes (macula adherens)
  • gap junctions (nexus) : they are communicating links between neighbouring cells.
  • So, the correct option is D.

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