How many forms of bacteria exist

Four morphological forms of bacteria exist (morphology) and have varied characteristics. Vibrios is a type of curved bacteria; cocci are round bacteria, spirochetes are small spiral-shaped bacteria and bacilli are rod-shaped. The ultrastructure of a bacterial cell is different from multicellular organisms (multicellular organisms are eukaryotic.

In conclusion, it is important to understand that without the discoveries of Lister, Fleming, and Pasteur, we would not be able to understand and explain the four major organism groups. Science was discovered by accident in some cases. However, it enabled more scientists to build upon their methods and help creates the health care system we have today. The population has since been able to increase and live a better quality of life due to historical science and understanding of infectious diseases. Bacteria are unicellular microbes which cell structure is simpler than most organisms as there are no nucleus or membrane-bound organelles (prokaryotic). Their size and shape vary over a large range. The chromosomes in bacteria that contain genetic material are found in the cytoplasm, as well as the organelles, ribosomes and storage granules. Bacteria’s control center contains genetic makeup is contained in a single loop of DNA. Some bacteria contain another circle of genetic makeup known as a plasmid. This plasmid contains the genes that give the bacteria more advantage over other bacteria (i.e., it can contain a gene that makes the bacteria more resistant to antibiotics).