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NEET2021ZoologyStructural Organisation in AnimalsActual

Identify the types of cell junctions that help to stop the leakage of the substances across a tissue and facilitate communication with neighbouring cells via rapid transfer of ions and molecules.

Options

  1. AGap junctions and Adhering junctions, respectively.
  2. BTight junctions and Gap junctions, respectively.
  3. CAdhering junctions and Tight junctions, respectively.
  4. DAdhering junctions and Gap junctions, respectively.

Correct answer

B. Tight junctions and Gap junctions, respectively.

Step-by-step solution

The neighbouring cells in tissues are held together by three types of intercellular junctions such as tight junction, adhering junction and gap junction. The tight junction prevents the leakage of substances. The adhering junction cement and adjoining cells with desmosomes, interdigitation, etc. The gap junction allows the movement of ions, signals and biomolecules between adjoining cells.

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