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What basis have biologists determined that Archaea and Bacteria are not closely related?
Wiki User
∙ 12y ago
Their DNA is very different.
Wiki User
∙ 12y ago
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Are protists more closely related to animals or to bacteria?
Protists are different from any other organisms found in the animal or bacteria kingdom. For this reason, they are seen as heterotrophic or autotrophic by biologists and botanists.
How are Archaea more closely related to eukaryotes than to bacteria?
Arche bacteria are much closer to eukaryotes.Bacteria also have some similarities. NO. Archaea, Bacteria and Eukaryota. Bacteria are more closely related to the more complex organisms (Eukaryotes). Archaea are now considered in their own domain. The Archaea in plankton are the most abundant organism on the planet.
Which are more closely related to complex organisms bacteria or archaea explain?
On basis of cladistic analysis higher organisms are more closly related to Archaea .
What evidence exists to support the idea that archaea are more closely related to eukaryotes rather than to bacteria?
Archaea and eukaryotes initiate transcription in the same way. The share some ribosomal proteins, and have similar types of tRNA.
What traits do Archaea have that suggest they may be closely related to the first life forms on earth?
Mrs. Cone huh?
Are protists more closely related to animals or to bacteria?
Protists are different from any other organisms found in the animal or bacteria kingdom. For this reason, they are seen as heterotrophic or autotrophic by biologists and botanists.
How are Archaea more closely related to eukaryotes than to bacteria?
Arche bacteria are much closer to eukaryotes.Bacteria also have some similarities. NO. Archaea, Bacteria and Eukaryota. Bacteria are more closely related to the more complex organisms (Eukaryotes). Archaea are now considered in their own domain. The Archaea in plankton are the most abundant organism on the planet.
The most recent phylogenetic data suggests that bacteria and archaea may be more closely related than archaea and eukarya true or false?
TRUE
Which are more closely related to complex organisms bacteria or archaea explain?
On basis of cladistic analysis higher organisms are more closly related to Archaea .
What is the largest group of Archaea?
Like bacteria, Archaea are single-celled organisms lacking nuclei. Most are cocci, bacilli, or spiral forms (although unusual shapes do exist). Unlike bacteria, Archaea lack peptidoglycan in their cell wall. At this point Archaea are not known to cause disease in humans or animals.Members of the kingdom Archaea had been considered to be bacteria until examination of their unique rRNA sequences showed that they are a distinct type of prokaryote. And despite being prokaryotes, Archaea appear to be more closely related to Eukaryotes than to Bacteria.This is the largest group of Archaea. Methanogens derive their name from the fact that methane is one of their metabolic byproducts.The largest group of Archaea is methanogens.
What evidence exists to support the idea that archaea are more closely related to eukaryotes rather than to bacteria?
Archaea and eukaryotes initiate transcription in the same way. The share some ribosomal proteins, and have similar types of tRNA.
Is bacteria the same as a microbe?
They are merely definitions, with one of them encompassing the other. A microorganism or microbe is an organism that is microscopic (usually too small to be seen by the naked human eye). Microorganisms include bacteria, fungi, archaea, and protists; microscopic plants (called green algae); and animals such as plankton, the planarian and the amoeba.Therefore, it would be similar to asking is a Pine tree the same thing as a tree?
What are the causes of bacteria?
Bacteria are microscopic organisms whose single cells have neither a membrane-bounded nucleus nor other membrane-bounded organelles like mitochondria and chloroplasts. Another group of microbes, the archaea, meet these criteria but are so different from the bacteria in other ways that they must have had a long, independent evolutionary history since close to the dawn of life. In fact, there is considerable evidence that you are more closely related to the archaea than they are to the bacteria
What traits do Archaea have that suggest they may be closely related to the first life forms on earth?
Mrs. Cone huh?
Examples of archaeabacteria?
Many scientists hypothesize that the Archaea are the closest modern relatives of Earth's first living cells. Called "universal ancestors," these are the cells from which all other life is believed to have evolved. This hypothesis is based on two types of evidence. Genetic analyses indicate that the Archaea domain branches off of the phylogenetic tree at a point that is closest to the tree's root. Furthermore, it has been observed that many of the Archaea prefer to live in extremes of temperature, salt concentration, and pH-environmental conditions thought to be similar to those found on Earth over 3.5 billion years ago, when life first originated.The Archaea share certain characteristics with Bacteria, others with Eukarya, and have some characteristics that are unique. For example, cells of the Archaea are structurally more similar to Bacteria, live predominantly as single cells, and have cell walls, although the walls do not contain the complex material called peptidoglycan that is a signature molecule of the Bacteria. While some Eukarya have cell walls, it is not a universal characteristic of that domain, and the Eukarya walls are composed of chitin or cellulose, neither of which occurs in cell walls of Archaea or Bacteria. Like the Bacteria, the Archaea lack a membrane-enclosed nucleus and their DNA exists in a circular form. On the other hand, their DNA is associated with histones, a characteristic of Eukarya, and their cell machinery (such as proteinsynthesizing enzymes and RNA polymerases) more closely resembles that found in the Eukarya. The lipids that comprise their membranes are unique, resembling neither the Bacteria nor the Eukarya.Certain members of the Archaea are able to produce methane gas, another unique characteristic. Methane is one of the most important greenhouse gases. An Italian scientist named Alessandro Volta first discovered it as a type of "combustible air" over two hundred years ago. He trapped gas from marsh sediments and showed that it was flammable long before we knew that it was produced by members of the Archaea that lived in salt marsh sediment. Other important habitats for Archaea with this unique ability include the digestive tracts of animals and sewage sludge digesters.For the source and more detailed information concerning this subject, click on the related links section (Answers.com) indicated below.
Why are monerans placed in a unique kingdom?
The kingdoms Eubacteria and Archaebacteria (aka domains Bacteria and Archaea) contain prokaryotic organisms, or organisms without a true nucleus. The kingdom Monera was used to include all the organisms of both kingdoms but was split once taxonomists realized that archaebacteria are more closely related to eukaryotes than eubacteria.
What is a bacteriocin?
A bacteriocin is a member of a class of antibiotic toxins which target closely related bacteria.
