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    Bacteria and Archaea

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    Bacteria and Archaea Bacteria and Archaea All single-celled organisms in the Bacteria and Archaea domains are referred to as prokaryotes. Prokaryotes are organisms whose genetic material is not contained within a nuclear envelop. These cells are profoundly important to the environment‚ medicine‚ and industry. (Postlethwait & Hopson‚ 2010‚ p. 196) Bacteria and Archaea are similar in shape‚ size‚ and appearance. They are both found occurring as rods (bacilli)‚ spheres (cocci)

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    Bacteria and Archaea

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    Bacteria and Archaea The Archaea are presently recognized as one of the two main domains of prokaryotes. The majority of genes that indicate Archaea to be different from Bacteria are for information transfer processes such as DNA replication‚ transcription and translation. Of these‚ DNA replication machinery appears to be most different between the two domains. In terms of transcription‚ the core subunits of the RNA polymerase are the same in Bacteria and Archaea‚ but archaea also contains several

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    Archaea and Eubacteria

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    Primarily‚ the Archaea were once believed to be just another rare group of bacteria‚ because like bacteria‚ they are single-celled microscopic prokaryotic organisms with no membrane bound nucleus (http://www.fossilmuseum.net/Evolution/archaeaevolution.htm). Despite the similarities in the cell structure of Eubacteria and Achaea‚ molecular research by Dr Carl Woese and his co-workers indicated that they differ significantly on the molecular level (Bacteria in Biology‚ Biotechnology and medicine‚ Paul

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    Archaea VS Bacteria

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    Should Bacteria and Archaea belong to the same Kingdom? The main purpose of this essay is to find out if Archaea and Bacteria should be classified as two different Kingdoms or as a single one. As organisms‚ bacteria and archaea both are microscopic and prokaryotic (not possessing a true nucleus). These prokaryotes are very abundant on Earth and inhabit a wide spread of areas‚ including extreme ones. Both are an example of the most ancient living cells‚ which have appeared over 3.5 billion years

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    The adaptation of archaea in acidic condition. How archaea adapt to acidic environment ? Use variety pH homeostatic mechanism that involve restricting proton entry by cytoplasmic membrane and purging of protons and their effect by cytoplasm. pH homeostatic mechanisms The cell membrane is highly impermeable to protons Membrane channel have a reduced pore size. Protein influx inhibited by chemiosmotic gradient Excess proton pumped out of the cell Cytoplasmic buffering helps to maintain

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    even though they are in a different sub-category. For instance‚ all bacteria and archaea are single-celled organisms and reproduce asexually‚ but have different habitats and react to antibiotics in different ways. When bacteria are compared to viruses there are notable differences. Viruses do not have cell walls made of peptidoglycan‚ are not living‚ and invade a host cell then multiplies to destroy the host. When archaea is compared to bacteria there are also similarities‚ but also notable differences

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    Similarities and Differences Bacteria and archaea both share the fact that they are single-celled prokaryotic microorganisms that lack membrane enclosed nuclei. It has been discovered that the two typically can be found to have the same size and shape as one another. “They are both found occurring as rods‚ cocci‚ spirals‚ plates‚ coiled etc.” ("Archaea vs. Bacteria‚" n.d.). Both organisms use the flagella to swim and also reproduce by means of binary fission. On the surface these similarities can

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    a type of bird‚ you should have some idea of what it is like. Living things are divided into three groups based on their genetic similarity. The three groups are: Archeae‚Eubacteria and Eukaryota. Archaea are microbes. Most live in extreme environments. These are called extremophiles. Other Archaea species are not extremophiles and live in ordinary temperatures and salinities. Some even live in our guts! Some extremophile species love the heat! They like to live in boiling water‚ like the geysers

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    BIO 3U1 Study Notes

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    always capitalized.. the species name is entirely lower case - arranged organisms based on common structural features - Linnaeus settled with Latin - altered to accommodate micro-organism TAXON ORDER: DOMAIN(3): Bacteria‚ Archaea‚ Eukarya KINGDOM(6): Bacteria‚ Archaea‚ Protista‚ Fungi‚ Plantae‚ Animalia PHYLUM CLASS ORDER FAMILY GENUS SPECIES Herbert F. Copeland (1902-1968) - American who re-classified all the micro-organisms - championed that Protista was different then other organisms

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    Taxonomy in a Nutshell

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    divides cellular life forms into archaea‚ bacteria‚ and eukaryote domains. It emphasizes the separation of prokaryotes into two groups‚ called  Bacteria and  Archaea. These two groups and eukaryotes each came from separate ancestors with poorly developed genetic make-ups. This classification system recognizes the fundamental divide between the two prokaryotic groups. Archaea appear to be more closely related to eukaryotes than they are to prokaryotic bacteria. The Archaea Domain consists of: being prokaryotic

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