Bacteria reproduction essays

Bacteria reproduction essays Bacteria are microscopic singular celled organisms grouped in the prokaryote kingdom. They have a seemingly simple internal structure but that is not so the internal structure of a bacterium is quite complicated . Bacterial growth is generally studied in cell cultures by visible count estimation which shows an apparent growth curve. (Stephenson 50) The growth curve shows the stages of bacterial growth within a cell culture. (Thimann 623). Bacteria can survive in a number of different extreme environments from extreme heat to little water. Bacterium have a internal structure that is more complicated than it seems at first. The first part of the bacterium is the plasma membrane which is a selectively permeable barrier that is the boundary of the cell. (Prescott 40) The next portion of a bacterium is the cytoplasmic matrix. The cytoplasmic matrix is the substance lying between the plasma membrane and the nucleoid. (Prescott 45) Although it is generally featureless in a microscopes it can be packed with ribosomes and is generally highly organized. (Prescott 45) The next one is the nucleiod of a bacterium.(Prescott 40) This is the area within a bacterium in which the genetic material of the cell is located. (Prescott 49) The nucleiod itself is not defined by a membrane but is an irregularly shaped region of the cell. (Prescott 50) The gas vacuole of a bacterium is used for buoyancy in aquatic environments. (Prescott 40) This is demonstrated by filling a bottle with Cyanobacteria stopping it with a stopper and then hitt ing the stopper with a hammer.(Prescott 45) The sudden pressure increase causes the gas vacuole to collapse so the bacteria sink to the bottom of the bottle.(Prescott 47) The inclusion bodies within a bacterial cell are storage for different substances such as carbon, phosphate and other substances. ( Prescott 40) The cell wall of Bacteria gives the bacteria shape and protects it from the outside environme...