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 beneficial and harmful activities of bacteria. A. Beneficial Activities of Bacteria: There are many kinds of bacteria without which we could not live. They are absolutely essential to the presence of life on earth. They make possible the continued existence of green plants and therefore of animals because the plants are the [...]
In this article we will discuss about the ten main orders under which bacteria has been classified. Order I. Pseudomonadales: It includes some photosynthetic, some chemosynthetic and many heterotrophic bacteria with straight, curved or spiral rods usually with polar flagellation. They are gram-negative and reproduce always by fission. The order includes 7 families. Of these the two important ones are: [...]