The upcoming discussion will update you about the differences between Pili and Fimbriae. Difference # Pili: 1. They occur only in Gram negative bacteria. 2. The number is 1-4 per cell. 3. Pili are longer and broader. 4. They help in conjugation. 5. Formation of pili is controlled by F+ or fertility factor. 6. They are tubular structures. Difference # [...]
The upcoming discussion will update you about the differences between Gram +ve and Gram -ve Bacteria. Difference # Gram +ve Bacteria: 1. They remain coloured blue or purple with Gram stain even after washing with absolute alcohol or acetone. 2. The wall is single layered. Outer membrane is absent. 3. The thickness of the wall is 20-80 nm. 4. The [...]
In this article we will discuss about the Structure of a Bacterial Cell. It is a primitive type of cell in which genetic material is not organised in the form of nucleus but instead lies freely in a naked super-coiled state in the cytoplasm whence it is known as pro-chromosome or nucleoid. Prokaryotic (= prokaryotic) cells are known for their [...]