Two animal cells are interconnected bya)Plamodesmatab)Cell wallc)Desmosomesd)Plasma membraneCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

A desmosome or macula adhaerens can be defined as a specialized cellular structure which helps in cell-to-cell adhesion. It is formed from protein plaques which are present n the cell membranes and are linked by filaments.
They are found in animal cells which acts like welds between adjacent epithelial cells and connects them.
So, the correct answer is 'Desmosomes'

Answer

Desmosome are the adhering material b/w two cells we study them under junctions

Answer

Desmosomes are the correct answer because they are specialized cell junctions that connect two animal cells together. They play a crucial role in maintaining the structural integrity of tissues and provide strong adhesion between cells.

Desmosomes are protein complexes that are primarily made up of two types of proteins: desmogleins and desmocollins, which are transmembrane proteins present on the plasma membrane of cells, and desmoplakins, which are cytoplasmic proteins that anchor the desmosomes to the cell's cytoskeleton.

Below are the key points explaining why desmosomes are the correct answer:

1. Function of Desmosomes:
Desmosomes function as mechanical junctions that provide strong adhesion between cells. They prevent cells from being pulled apart under mechanical stress and help to distribute mechanical forces evenly across a tissue.

2. Structure of Desmosomes:
Desmosomes consist of two main components: the transmembrane proteins (desmogleins and desmocollins) and the cytoplasmic proteins (desmoplakins). The transmembrane proteins extend through the plasma membrane of adjacent cells, forming a strong bond between them. The cytoplasmic proteins connect the transmembrane proteins to the intermediate filaments of the cytoskeleton, providing structural support and stability.

3. Adhesion and Anchoring:
The transmembrane proteins of desmosomes on one cell interact with the transmembrane proteins on the adjacent cell, forming a zipper-like structure that holds the cells together. The cytoplasmic proteins connect to the intermediate filaments, which are composed of proteins like keratin, providing anchorage and stability.

4. Importance in Tissues:
Desmosomes are especially important in tissues that experience mechanical stress, such as the skin, heart, and muscles. They contribute to the strength and elasticity of these tissues, allowing them to withstand stretching and contraction without tearing or separating.

5. Other Cell Junctions:
While desmosomes connect cells together, other cell junctions such as tight junctions and gap junctions serve different functions. Tight junctions seal the space between cells, preventing the leakage of molecules between them, while gap junctions allow direct communication and exchange of small molecules between cells.

In conclusion, desmosomes are specialized cell junctions that connect two animal cells together. They provide strong adhesion and play a crucial role in maintaining the structural integrity of tissues.

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