A typical growth curve for a population of bacterial cells, illustrates some of the dynamics that affect the population over the course of time. The population's history may begin when several bacteria enter the human respiratory tract or are transferred to a tube of growth medium in the laboratory phases of the curve are recognized as follows: The lag phase [...]
Bacteria reproduce by an asexual process called binary fission. In this sequence of events, the chromosome duplicates, the cell elongates, and the plasma membrane pinches inward at the center of the cell. When the nuclear material has been evenly distributed, the cell wall thickens and grows inward to separate the dividing cell. No mitotic structures (e.g., spindle, aster) are present [...]
The anatomy of bacteria or any organism refers to its size and shape and the structural features that make it distinctive. Anatomy is an inherited trait derived from information stored in the chromosomal DNA. This trait is passed from generation to generation in the genes. Viewed under the light microscope, most bacteria appear in variations of three different shapes – [...]