Research progress on plant cell wall, what is plant cell wall?

Difference Between Cell Membrane and Cell Wall:

1. Only plants, bacteria, and fungi have cell walls, while animal cells do not have cell walls.

2. The cell wall is located in the outermost part of the cell, and the chemical composition of the plant cell wall is cellulose and pectin, while the chemical composition of the bacterial and fungal cell wall is glycoprotein.

3. The cell membrane is located in the cell wall, and the osmosis is mainly composed of phospholipids and protein molecules.

Plant cells have cell walls. Plant cell is the basic unit of structure and function of plant life activities, which is composed of two parts: protoplast and cell wall. Protoplasts are a general term for everything in the cell wall, which is mainly composed of cytoplasm and nucleus.

The cell wall is a thicker, tougher and slightly elastic structure located outside the cell membrane, which is composed of a slime complex, and some species also have a capsule composed of polysaccharides outside the wall, which plays 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.

The plant cell wall is a thick wall that is present on the periphery of plant cells and is one of the main features that distinguish it from animal cells. It is composed of three parts: the intercellular layer, the primary wall and the secondary wall. The main components are polysaccharide substances.

The cell wall is involved in maintaining a certain morphology of the cell, enhancing the mechanical strength of the cell, and is also related to the physiological activities of the cell.

After some plant cells stop growing, the cell wall layer that continues to accumulate on the inner side of the primary wall is located between the plasma membrane and the primary wall. The filling and attachment of lignin in the cell wall can increase the hardness of the cell wall and increase the mechanical force of the cell population, and the process of filling lignin is called lignification.

Cell wall, the thick wall on the periphery of a cell. It is a structure unique to plant cells, which has a protective and supportive effect, and is related to the absorption, transpiration and transport of substances in plant cells. The thickness of the cell wall often varies depending on the tissue and function.

Plants, fungi, algae, and prokaryotes all have a cell wall, whereas animal cells do not have a cell wall.

The cell wall is divided into 3 layers, namely the intercellular layer (mesosphere), 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.

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.