In this article we will discuss about the definition and locomotion of Flagella. Definition of Flagella: The motile bacterium may possess a flagellum (plural flagella). The flagellum is hair like helical and surface appendages emerging from the cell wall. It is of 20-30 nm in diameter and 15 µm long. It provides various types of motility to the bacterial cell. [...]
In this article we will discuss about the three categories of methods in order to obtain particular kind of organism, physical, chemical and biological methods. 1. Physical Conditions for Growth: (i) Heat Treatment: This is applied in case of bacteria which form spores for example Bacillus spp. Lactobacillus spp. etc. To select the endospore-forming bacteria, a mixed culture can be [...]
In this article we will discuss about:- 1. Meaning of Plasma Membrane 2. The Fluid Mosaic Model of Plasma Membrane 3. Function. Meaning of Plasma Membrane: The plasma membrane also called cell membrane or cytoplasmic membrane is a structure internal to the cell wall. The term plasma membrane was coined by C. Nugeli and C. Cramer in 1855. However, no [...]