what is cell wall and secondary cell wall made up of
Answers
Answer:
Cell wall in plant cells is composed of cellulose, hemi-cellulose and pectin. These are structural carbohydrates. Algal cell walls are made up of glycoproteins and polysaccharides such as agar. Chitin, polymer of N-acetylglucosamine, is major component of fungal cell wall.
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Cell Wall
A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism.
The secondary cell wall consists primarily of cellulose, along with other polysaccharides, lignin, and glycoprotein. It sometimes consists of three distinct layers - S1, S2 and S3 - where the direction of the cellulose microfibrils differs between the layers.