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Answer:

The main difference between tight junction and gap junction is that tight junction regulates the movement of water and solutes between epithelial layers whereas gap junction allows the direct chemical communication between adjacent cytoplasms.

• Tight junctons : Zonula eccluders Plasma membranes in the apical parts of the sojacent epela con become tightly packed together or are even fused to form the tight junctions. They check the dow of materials between the cel
• Gap junction : These are meant for chemice exchange between jacent cells
• Adhering junctons : They perform cementing Aunction to keep neighbouring cel together. Adhering junctions are of three types: souls adherens, desmosomes These areas lows: (mecure adherens) and semidesmosomes.

Explanation:

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: [tex] \implies[/tex] The tight junction are complex of multi proteins at the junction which plays an important role in preventing leakage of the solutes being transported along with water between the cells and helps in sealing the pathway of cellular apparatus.They are found only in vertebrates.They are also known as occluding junctions or Zonulae occludens.

: [tex] \implies[/tex] The Adherens junction which is also known as Zonula Adherens is also made of complexes of proteins present at the cell-cell junction found in epithelial and endothelial tissues.Its cytoplasmic side is connected with the actin cytoskeleton.They play an important role by allowing the blastocyst to penetrate in the uterine epithelial cells.

:[tex] \implies[/tex] The gap junction is also called as nexus or macula communicans which is mainly found in nerve cells of the body.They play an important role in directly connecting the cytoplasm of the two cells.Thus, allow various kinds of molecules, electrical impulses to pass with help of regulated gate in the cells.

know more :

• The Cell junctions work in conjunction with cell adhesion molecules and the extracellular matrix to keep animal cells together.

• The Communication between nearby cells is enabled by specific protein complexes termed communicating gap junctions, which are found at cell junctions.

• They help keep epithelia's paracellular barrier intact and regulate paracellular trafficking. In epithelial tissues, cell connections are very numerous

• The comparable communication channels in plants are known as plasmodesmata, while similar communication channels in fungus are known as septal pores. The structural tasks of cell connections are instead fulfilled by cell walls in multicellular plants

• The Plants have plasmodesmata, which are counterparts of communicative cell connections. Additionally, numerous cell adhesion molecules are involved in the formation of cell junctions. Selectins, cadherins, integrins, and the immunoglobulin superfamily are the four primary kinds

• The cell junctions and their types. In mammals, cell junctions also known as intercellular bridges are multiprotein complexes that enable contact or adhesion between adjacent cells or between a cell and the extracellular matrix.

• The Cell junctions also have a role in decreasing the amount of stress put on cells.

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