What is the role of the cell wall and what is the main role of the cell wall

1. Maintain the shape of the cell, control the cell growth The cell wall increases the mechanical strength of the cell, and bears the turgoring pressure of the internal protoplasts due to the water absorption of vacuoles, so that the cell has a certain shape, which not only protects the protoplast, but also maintains the inherent morphology of organs and plants. In addition, the wall controls the growth of the cell because the premise for the cell to expand and elongate is for the cell wall to relax and irreversibly stretch.

2. Material transport and information transmissionThe cell wall allows small molecules such as ions and polysaccharides and low-molecular-weight proteins to pass through, while blocking macromolecules or microorganisms. Therefore, the cell wall is involved in a series of physiological activities such as material transport, reducing transpiration, preventing water loss (secondary walls, wax on the surface, etc.), and regulating the water potential of plants. The size of the pores or plasmodesmata on the cell wall is affected by the physiological age of the cell and the strength of metabolic activity, so the cell wall has a regulatory effect on the transport of intercellular substances.

In addition, the cell wall is also a medium and pathway for the transmission of chemical signals (hormones, growth regulators, etc.) and physical signals (radio waves, pressure, etc.).

3. Some oligosaccharide fragments in the defense and resistance cell wall can induce the formation of phytoalexin, and they also have a regulatory effect on other physiological processes, and this oligosaccharide fragment with regulatory activity is called oligosaccharin. When a heptanoside olisaccharide is applied to soybean cells, it activates the gene responsible for the synthesis of antibiotics that inhibit mold growth, resulting in the production of antimicrobials. The functions of a variety of oligosaccharides are complex and diverse, such as as protease inhibitor inducers, which play a role in plant resistance to pests and diseases; Some oligosaccharides can cause allergic death in plants, so that pathogens cannot spread further; There are also oligosaccharides involved in the regulation of plant morphogenesis.

In addition to being a structural component, the stretch protein in the cell wall also has the function of preventing disease and stress. For example, after cucumber resistant varieties are infected with a mold, the content of hydroxyproline in their cell walls increases faster than that of sensitive varieties.

4. Enzymes in the cell wall of other functions are widely involved in the synthesis, transfer, hydrolysis, transport of extracellular substances to the cell, and defense of cell wall polymers.

Protects cells within the cell wall from harm.

To put it simply. Maintain cell morphology. Protects cells. Allow the cells to be stacked regularly.

The role of the cell wall:

To put it simply, the main role of the cell wall is to protect and support.

Control cell access 0:38:40 on September 23, 2013.

Forms a fibrous network structure to protect plant cells.

Prevents cells from slipping.

Prevent cells from being snatched by the cell police.

The role of the cell wall:

1) Stabilize cell morphology.

2) Control cell growth and enlargement.

3) Participate in the transmission of intracellular and extracellular information.

4) Defensive function.

5) Identification role.

To put it simply, the main role of the cell wall is to protect and support.

Protective. The cell wall is mainly made up of cellulose, which forms the framework of the cell wall and contains other substances. Under the electron microscope, it can be seen that this kind of frame is composed of layers of cellulose microfilaments, referred to as microfibrils, each layer of microfibrils is basically arranged in parallel, and each layer is added, the orientation of the microfibrils is different, so the arrangement of microfibrils between layers is staggered into a web.

The space between the microfibrils is usually filled with other substances.

1. The function of the cell wall is to maintain the intrinsic morphology of the cell and play a protective role. Together with the cell membrane, it completes the exchange of substances in and out of the bacterium. The epitope on the cell wall determines the antigenicity of the cell. The cell wall is the fulcrum of flagellar movement.

2. The cell wall is a thicker, tougher and slightly elastic structure located outside the cell membrane, and its components are viscous complexes, and some species also have a capsule composed of polysaccharides outside the wall to play a protective role. The capsule itself also acts as a nutrient for the cell and can be used by the cell when it is deficient.

1. The role of the cell wall is to protect cells and support cells.

2. The cell wall is divided into 3 layers, namely the intercellular layer (middle layer), the primary wall and the secondary wall. The intercellular layer holds adjacent cells together to form tissue. The primary wall is on both sides of the intercellular layer and is present in all plant cells.

3. The secondary wall is divided into three layers: outer (S1), middle (S2), and inner (S3), and sometimes one layer can appear in the inner layer. With such thick walls, water and nutrients cannot penetrate. Some plants have nodules on their secondary walls, and they also differentiate into special structures, such as pores and nodules.

The pores are the areas where material flows between cells, while the nodules are protrusions in the inner layers of the secondary walls.