Grade 11 Exam > Grade 11 Videos > Biology for Grade 11 > Cell Junction: Adhering & Tight
Cell Junction: Adhering & Tight Video Lecture | Biology for Grade 11
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FAQs on Cell Junction: Adhering & Tight Video Lecture - Biology for Grade 11
| 1. What are cell junctions? |  |
Cell junctions are specialized structures that connect individual cells together in tissues. They play a crucial role in maintaining the integrity and function of tissues by providing mechanical support and facilitating communication between cells.
| 2. What is the function of adhering junctions? | |
Adhering junctions, also known as cell-cell junctions, are responsible for mechanically linking adjacent cells together. They contribute to the stabilization of tissues and provide structural support, especially in tissues subjected to mechanical stress.
| 3. How do adhering junctions work? | |
Adhering junctions consist of transmembrane proteins, such as cadherins, that interact with the same proteins on neighboring cells. These interactions form strong adhesive bonds, creating a connection between the cells. This allows for the transmission of mechanical forces and helps maintain the structural integrity of tissues.
| 4. What are tight junctions? | |
Tight junctions are specialized cell junctions that form a seal between adjacent cells, preventing the leakage of fluids and molecules between them. They play a crucial role in establishing and maintaining the barrier function of epithelial and endothelial tissues.
| 5. How do tight junctions contribute to tissue function? | |
Tight junctions regulate the passage of molecules and ions through the intercellular space. By creating a barrier, they control the movement of substances across epithelial and endothelial tissues. This selective permeability allows for the absorption of nutrients, the secretion of waste products, and the maintenance of tissue homeostasis.
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Nov 21, 2024 Last updated |
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