NEET 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 the most significant structural component of plant cell wall. Cellulose, polysaccharide containing repeated unbranched (1-4) D-glucose units, is synthesized at the plasma membrane by the cellulose synthase complex (CSC) from bacteria to plants.

Detailed explanation-3: -The plant cell wall is made up of cellulose which is a complex substance and provides structural strength to the plants.

Detailed explanation-4: -Unlike those of plants and algae, fungal cell walls lack cellulose entirely and contain chitin.

Detailed explanation-5: -Bacterial cell walls are made of peptidoglycan (also called murein), which is made from polysaccharide chains cross-linked by unusual peptides containing D-amino acids. Bacterial cell walls are different from the cell walls of plants and fungi which are made of cellulose and chitin, respectively.