Concentrated deposits of certain substances presented/located in the cytoplasm of certain bacteria are known as cytoplasmic granules or inclusion bodies. They serve as storage areas for nutrients,...
Tag: Structure of Bacterial Cells
Many gram-positive bacteria have acidic components called teichoic acids embedded in their cell wall. Teichoic acids were discovered in 1958 by Armstrong and co-authors. Gram Positive cell wall...
Cell wall of Gram-negative bacteria Lipopolysaccharide (LPS) layer also called the outer membrane is the outermost layer present only in the cell wall of gram-negative bacteria. Braun’s...
Found mainly in Gram-negative organisms, fimbriae or pili (singular: pilus) are hair-like filaments (tiny hollow projections) that extend from the cell membrane into the external environment. A pilus...
Bacterial toxins are broadly divided into two general categories: exotoxins and endotoxins. Exotoxins are proteins produced inside pathogenic bacteria and are secreted into the surrounding medium,...
Flagella (singular, flagellum) are the locomotory structures of many prokaryotes. Most protozoa and some bacteria are motile. Protozoa use flagella, cilia, or pseudopods, whereas motile bacteria move...
