Results 181 to 190 of about 50,954 (215)
[Phosphatidylserine in Prokaryota and Eukaryota. Decarboxylation, synthesis and transport].
Postepy biochemii, 1999 openaire +1 more source
The ultrastructure of Trimastix marina Kent 1880 (Eukaryota), an excavate flagellate
European Journal of Protistology, 2000 Summary The ultrastructure of Trimastix marina is documented for the first time. This protist has four flagella which insert at the head of a longitudinal feeding groove. The basal bodies are elongate and arranged in a cruciate pattern. The anterior and posterior basal bodies lack cartwheels. The posterior flagellum bears two vanes.
Catherine Bernard +3 more
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Biology Bulletin, 2005 The distribution of protein domains was analyzed in superkingdoms Archaea, Bacteria, and Eukaryota. About a half of eukaryotic domains have prokaryotic origin. Many domains related to information processing in the nucleocytoplasm were inherited from archaea.
A. M. Kulikov, Alexander V. Markov
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Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1986 In early biological evolution anoxygenic photosynthetic bacteria may have been established through the acquisition of ribulose bisphosphate carboxylase-oxygenase (Rubisco). The establishment of cyanobacteria may have followed and led to the production of atmospheric oxygen.
Henry Daniell +3 more
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An interphase model for mitotic chromosome organization in eukaryota
Biosystems, 1981A model for the spatial relationship of the arrangement of the chromosomes in the nucleus in eukaryota is presented. Evidence is derived from light and electron microscopic studies, application of autoradiographic and banding techniques; on the organization, structure and behaviour of chromosomes during interphase and other stages of cell cycle.
A.K. Sharma, U.C. Lavania
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The hybrid nature of the Eukaryota and a consilient view of life on Earth
Nature Reviews Microbiology, 2014The origin of the eukaryotic cell, which is known as eukaryogenesis, has puzzled scientists for more than 100 years, and many hypotheses have been proposed. Recent analyses of new data enable the safe elimination of some of these hypotheses, whereas support for other hypotheses has increased.
McInerney, James O +2 more
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European Journal of Protistology, 1999
Summary The ultrastructure of Carpediemonas membranifera , a small flagellate isolated from marine intertidal sediments, is presented for the first time. This protist has two flagella inserting at the anterior end of a feeding groove. The posterior flagellum bears three vanes. The cell has an anterior nucleus, a single dictyosome and a hydrogenosome-
David J. Patterson +1 more
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Summary The ultrastructure of Carpediemonas membranifera , a small flagellate isolated from marine intertidal sediments, is presented for the first time. This protist has two flagella inserting at the anterior end of a feeding groove. The posterior flagellum bears three vanes. The cell has an anterior nucleus, a single dictyosome and a hydrogenosome-
David J. Patterson +1 more
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International Journal of Systematic and Evolutionary Microbiology, 2021
A new strain of planktonic heliozoans (ZI172) belonging to the genusMicroheliella(the sister group of Cryptista in Diaphoretickes), closely related to the only one known strain ofMicroheliella maris(CCAP 1945/1), was studied with light microscopy and SSU rRNA gene sequencing.
Daria Drachko +3 more
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A new strain of planktonic heliozoans (ZI172) belonging to the genusMicroheliella(the sister group of Cryptista in Diaphoretickes), closely related to the only one known strain ofMicroheliella maris(CCAP 1945/1), was studied with light microscopy and SSU rRNA gene sequencing.
Daria Drachko +3 more
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Alternative pathway (cyanobacteria to eukaryota)
1994It is quite evident from the fossil record that prokaryotic cells were the first cell type evolved. After a long interval of nearly two billion years eukaryotic cells appeared. There is little doubt that this cell type arose from the bacterial cell. How this occurred has been the subject of much speculation.
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2009
Abstract Resolving the tree of life for eukaryotes is an important challenge for biologists. 7is challenge has largely been taken on by molecular evolutionists because of the increasing availability and ability of genome data to resolve ancient relationships, combined with the lack of an extensive fossil record from this period in ...
Debashish Bhattacharya +3 more
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Abstract Resolving the tree of life for eukaryotes is an important challenge for biologists. 7is challenge has largely been taken on by molecular evolutionists because of the increasing availability and ability of genome data to resolve ancient relationships, combined with the lack of an extensive fossil record from this period in ...
Debashish Bhattacharya +3 more
openaire +1 more source