Bacteria, Viruses, and Prions: Cell Structure and Reproduction

860 Words2 Pages

Commonly known for causing diseases in humans, bacteria are also a valuable key in a healthy lifestyle and other aspects of life. From manufacturing Vitamin K to giving yogurt its tangy taste, bacteria come in many shapes, sizes and forms. Bacteria lack a well-defined nuclei and membrane-bound organelles, and with chromosomes containing a single closed circle of DNA, they are categorized as Prokaryotes. Each bacterial cell typically has the same structures that have a certain function within the cell. Within a Nucleoid DNA, RNA and some proteins are found. The other structures include: genospore, plasmid, cytoplasm, Endospores, Ribosomes, Storage Granule, cell envelope, a capsule, pili and flagella. The three main types of bacteria are coccus, spherical; bacillus, rod shaped; and Spirillum, are spiral.

Along with archaea, bacteria reproduce asexually. The process that which bacteria reproduce is called binary fission. The single chromosome in the bacteria replicates. The two copies of replicated chromosomes separate as the cell gets bigger. Two new cells with one chromosomes are divided from newly formed plasma membrane and cell wall. This process creates two cells from one and four cells from two and continues until billions of cells have been reproduced. Bacteria can from endospores, this doesn’t mean that they can reproduce, it means that bacteria can disperse and survive for long periods of time.

Vibrio Cholerae is the causative agent in Cholera. After the ingestion of Vibrio Cholerae in contaminated food or water, V. Cholerae overtakes the intestines 12 to 72 hour before the symptoms begin to appear. Stomach cramps and vomiting followed by diarrhea cause fluid loss that can add up to one liter of fluid. The loss of fl...

... middle of paper ...

... Apr 2014. .

Mader, Sylvia S. , and Michael Windelspecht. Essentials Of Biology. 3rd ed. McGraw-Hill, 288-289. Print.

"Disease Description ." Centers For Disease and Control Centers . CDC , 12 Nov 2009. Web. 20 Apr 2014. .

"Mumps." Mayo Clinic . Mayo Clinic , 5 October 2005. Web. 20 Apr 2014. .

"Creutzfeldt-Jakob Disease Fact Sheet." National Institute of Neurological Disorders and Stroke . N.p., 18 April 2014. Web. 20 Apr 2014. .

"About CJD." Centers For Disease and Control Centers . CDC , 11 December 2011. Web. 20 Apr 2014. .

. BSE Info. BSE INFO. Web. 20 Apr 2014.

More about Bacteria, Viruses, and Prions: Cell Structure and Reproduction

Open Document