bacterial cell wall structure

A lose gelatinous sheath called slime layer is usually deposited around the bacterial cell wall. It is usually composed of polysaccharides. In some bacteria, the slime layer becomes thick due to the presence of some nitrogen compounds and forms a capsule. A capsu..

A typical bacterial cell shows the following structural featur..

Bacterial Chromosome - In bacteria, which being prokaryotic organisms, the entire hereditary material is packed into a single, irregularly folded compact mass called nucleoid or genophore or bacterial chromosome. It is short and simple consisting of a single DNA molecule. The DN..

Cell Wall - A cell wall is a characteristic feature of plant cells, bacteria and fungi. The composition however varies in different grou..

The cell wall is present only in plant cells. It is made up of a complex polysaccharide carbohydrate called cellulose. Its function is to give strength and rigidity to the cell. It is non-livin..

It is the outer tough covering around the cell, which provides specific shape and protection to the bacterium. It prevents the cell from swelling and bursting due to osmotic changes. It is composed of a polysaccharide called murein or peptidoglycan. It consists of polysaccharide..

The different kinds of micromolecules and macromolecules that we have studied so far occur in the cell dissolved in solution or as suspensions in a colloidal state. Alternatively, they may be assembled into subcellular components like cell membrane, cytoplasm and cell..

Summary - The cells of all living organisms consist of protoplasm, which is bound by a cell membrane. Prokaryotic cells and cells of algae, fungi and higher plants contain a cell wall outside the cell membrane. Some protozoans ..

The cellwall of prokaryotes like bacteria is composed of peptidoglycans. Apart from maintaining the shape and size of plant cells, the cell wall is involved in some specific functions such as Protection against the attack of pathogens Providing mechanical support Allow..

Structure of Cell - Cells vary in shape and size. They may be oval, spherical, rectangular, polygonal, spindle shaped, star shaped, rod-shaped or totally irregular like the nerve cell. The diversity in cells is in accordance with the role or functio..