LIFE SCIENCE

Detailed explanation-1: -The most important structural component of plant cell walls is cellulose. Cellulose is a carbohydrate found in the cell wall of plants. The carbohydrate is a polysaccharide structure. Polysaccharide is made up of a long chain of several sugar units bonded together by chemical linkage.

Detailed explanation-2: -Cellulose is a very important polysaccharide because it is the most abundant organic compound on Earth. Cellulose is a major component of tough cell walls that surround plant cells, and it’s what makes plant stems, leaves, and branches so strong.

Detailed explanation-3: -Cell walls are composed primarily of multiple polysaccharides that can be grouped into three major classes: cellulose, pectins, and hemicelluloses.

Detailed explanation-4: -The cellulose molecules provide tensile strength to the primary cell wall. Each molecule consists of a linear chain of at least 500 glucose residues that are covalently linked to one another to form a ribbonlike structure, which is stabilized by hydrogen bonds within the chain (Figure 19-70).

Detailed explanation-5: -5.3. Cellulose, as is starch, is a carbohydrate. It is a structural polysaccharide, while starch is one of the storage polysaccharides. In terms of quantity, cellulose is the most represented polymer on Earth and is the main support for trees and other plants (cotton, flax, jute, sugarcane, cereals, etc.).