AP BIOLOGY

Detailed explanation-1: -The cell wall is composed of a network of cellulose microfibrils and cross-linking glycans embedded in a highly cross-linked matrix of pectin polysaccharides. In secondary cell walls, lignin may be deposited.

Detailed explanation-2: -Cellulose is synthesized by the enzyme cellulose synthase, a membrane protein that catalyzes the direct polymerization of glucose from the substrate UDP-glucose into a cellulose product. Genes for cellulose synthases have been identified from many bacteria, Dictyostelium discoideum, and higher plants.

Detailed explanation-3: -Cellulose is the primary structural component responsible for much of the mechanical strength of the cell wall. The distribution and orientation of cellulose microfibrils within the cell wall contribute to the control of cell growth.

Detailed explanation-4: -Cellulose is the most essential structural component of plant cell walls and the most common macromolecule and organic substance on the Earth. Cellulose is made up of carbohydrates which is a polysaccharide structure. Polysaccharide is made up of long chains of many sugar molecules that are chemically linked together.

Detailed explanation-5: -In plant cell walls, there are various building blocks, such as cellulose, hemicellulose, and callose. For the concrete, the cells are thought to use a substance called pectin. All three building blocks and the concrete are made of different types of sugars. Cellulose is the major reinforcement for the cell wall.