The Composition Of Cell Walls Varied In Each Species.

The cell wall is rigid and strong coating that surrounds some types of cell wallcell. is a feature characteristic of plant cells, bacteria, fungi, algae and somearchaea. This area is located outside the cell membrane. The main function ofthe cell wall is to provide stiffness, strength, structural support, protection against mechanical stress and infection. Dindung cells also help in the diffusionof gases in and out of the cells. The composition of the cell walls varied in eachspecies and also depends on the stage of development of the organism.Protozoa and animals do not have cell walls.
Definition Of Cell Wall
Plant Cell
The cell wall is a rigid layer surrounding a few cell types. This area is located outside the cell membrane functioning to provide stiffness, strength, protection against mechanical stress and infection. And also provide cells with limitedplasticity that prevents cells do not burst because of the pressure of tugor. cell wall coated kutin prevent water loss and also helps in communication cells. The cell wall is a feature characteristic of cells of plants, bacteria, fungi, many algaeand some archaea. Protozoa and animals do not have cell walls.
The Function Of The Cell Wall



Below are the cell wall functions:
*Provide structure and shape of the cell.
*Provide structural support.
*Protection against infection and mechanical stress.
*Separates the inside of the cell from the outside environment.
*The cell wall allows the transportation of substances and the information fromthe inside of the cell to the exterior.
*It also helps in the regulation of osmotic.
*Prevent water loss.
*Physiological and biochemical activities of cell wall helps in cell-cellcommunication.
*The cell wall prevents the cells do not burst because of the pressure of tugor.
*Help the diffusion of gases into and out of cells.
*Also provide protection from mechanical insects and pathogens.


The Structure Of The Cell Wall
The composition of cell walls varied in each species. In the bacterial cell wall is composed of Peptidoglycan. Cell walls made of glycoproteins and Archeanpolysaccharides. In fungal cell walls made of chitin and Glucosamine. In thealgae are composed of glycoproteins and polysaccharides. Plant cell wallcomposed primarily of cellulose, hemicellulose, lignin, pectin and glycoproteins.
the structure of the cell wall


Plant Cell Walls

The presence of a cell wall is the main difference between plant cell and animal cell.
The cell walls of plants do important functions such as providing forms, tensile strength and protection and also helps cells undergo pressure tugor pressure to maintain the contents of the cell.
Plant cell wall composed primarily of cellulose. cellulose is the macro-the most abundant molecule on Earth.
The cell wall of the plant consists of three layers: the primary cell wall, secondarycell walls and middle lamella.
The Middle lamella is the first layer that forms during cell division. This layer rich in pectin. This is the outermost layer, the joining together of plant cells adjacentand holds them together.


Components of the cell wall

The primary cell wall is formed after the Middle lamella. The primary cell wall is made up of pectin compounds, hemicellulose and glycoproteins. This layerconsists of a framework of cellulose fibrils, micro-matrix in the gel. Primary cell walls are thin and flexible layer layers that can be expanded.
The secondary cell wall is thick layer formed in the primary cell wall. The secondary cell wall is very rigid and gives strength. The secondary cell wall is composed of cellulose, hemicellulose and lignin.
In cell wall carbohydrates to grow is cellulose, hemicellulose and pectin andlignin, proteins and enzymes.

The outside of the primary cell wall of epidermis is usually formed a barrierpermeability and is known as the cuticle of plants.
Secondary cell walls containing cellulose, xylan and lignin.
Plant cell walls also contain enzymes such as HYDROLASES, esterase, peroxidaseand transglycolases. structural proteins and also contains silica crystals.

Postingan terkait:

Belum ada tanggapan untuk "The Composition Of Cell Walls Varied In Each Species."

Post a Comment