what is chemical composition of cell wall?
Answers
Answer:
Explanation:
The cell wall is mainly composed of carbohydrate rich materials. The major components of cell wall are cellulose, pectins, hemicelluloses, proteins and phenolics. The cell wall is a biphasic structure consisting of relatively rigid cellulosic microfibril embedded in gel-like non-cellulosic matrix.
The microfibrillar phase consists of only cellulose (β1, 4-glucan) and the matrix is composed of non-cellulosic polysaccharides and other substances, which include pectins, hemicelluloses, proteins and phenolics.
The microfibrillar phase is readily visible in Electron Microscope and is crystalline, i.e. its molecules are arranged in a definite way and the matrix is non-crystalline. Moreover, it is relatively homogeneous in chemical composition than matrix.