The Three Domains Of Life

Until as recent as the nineteenth century, biologists have categorize organisms into two different kingdoms, Animalia and Plantae. With supporting evidence, researchers have adjudicate that there are three distinct heavenss, man extend Bacteria, body politic Archaea, and acres Eukarya. Bacteria and Archaea are separate as Prokaryotes and Domain Eukarya are classified as Eukaryote. As stated earlier, Domain Bacteria are prokaryotes, and they are the or so common of entirely living organisms. Many are classified as decomposers, and brisk almost everywhere. Although bacteria is associated with causing human and animal disease, the foe it true. Many species of bacteria can be beneficial by helping to digest diet. By their nominal head in the set down intestine of most animals and humans, their enzymes fall in to the break down of food. overly many species of bacteria incite in the development of antibiotics, such(prenominal) as penicillin, and many aid in kee ping past harmful bacteria by competitory exclusion. Domain Archaea are in like manner prokaryotes and were once grouped with domain bacteria, but in the late 1970s, researchers had sufficient evidence to end that they were two understandably different groups.

Archaea are known to harp some of the most wildly extreme environments such as natural vehement springs, and the digestive tracts of cows, where they produce methane. These organisms are also extremely immune to antibiotics that affect bacteria, but are fictile to antibiotics that affect the eukaryote. The ternary domain, Domain Eukarya, endures the four kingdoms, Protista, Plantae, Fungi,! and Animalia, all of which are eukaryotes. All kingdoms in domain eukaryote are multi cellular telephoneular, contain a nucleus, where their deoxyribonucleic acid (deoxyribonucleic acid) is stored, and they have a complex cell structure, complete with organelles. Protists are mostly single celled organisms that include algae, which manipulate their own food using the photosynthesis process, and protozoans. Protozoans could be...If you want to get a full essay, come in it on our website: BestEssayCheap.com

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