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Clockwise from top right: Amoeba proteus, Actinophrys sol, Acanthamoeba sp., Nuclearia thermophila., Euglypha acanthophora, neutrophil ingesting bacteria. An amoeba (/ ə ˈ m iː b ə /; less commonly spelled ameba or amœba; pl.: amoebas (less commonly, amebas) or amoebae (amebae) / ə ˈ m iː b i /), [1] often called an amoeboid, is a type of cell or unicellular organism with the ability ...
5–8 Plasmodium falciparum: malaria parasite, gametocyte phase [47] 7–14 Trypanosoma cruzi: parasitic kinetoplastid, Chagas disease [48] 14–24 Entamoeba histolytica: parasitic amoeban [49] 15–60 Balantidium coli: parasitic ciliate [50] 50–100 Paramecium caudatum: free-living ciliate [51] 120–330 Amoeba proteus: free-living amoebozoan ...
An amoeba of the genus Mayorella (Amoebozoa, Discosea) Amoebozoa is a large and diverse group, but certain features are common to many of its members. The amoebozoan cell is typically divided into a granular central mass, called endoplasm, and a clear outer layer, called ectoplasm. During locomotion, the endoplasm flows forwards and the ...
In Amoeba, the pseudopodia are approximately tubular, and rounded at the ends (lobose). The cell's overall shape may change rapidly as pseudopodia are extended and retracted into the cell body. An Amoeba may produce many pseudopodia at once, especially when freely floating. When crawling rapidly along a surface, the cell may take a roughly ...
Bacteria function and reproduce as individual cells, but they can often aggregate in multicellular colonies. [54] Some species such as myxobacteria can aggregate into complex swarming structures, operating as multicellular groups as part of their life cycle , [ 55 ] or form clusters in bacterial colonies such as E.coli .
This is an accepted version of this page This is the latest accepted revision, reviewed on 14 November 2024. Genus of small ameboid protist that inhabits soil, freshwater, and marine environments Mayorella An unidentified Mayorella species Scientific classification Domain: Eukaryota Phylum: Amoebozoa Class: Discosea Order: Dermamoebida Family: Mayorellidae Schaeffer 1926 Genus: Mayorella ...
The Gram stain, developed in 1884 by Hans Christian Gram, characterises bacteria based on the structural characteristics of their cell walls. [ 176 ] [ 77 ] The thick layers of peptidoglycan in the "Gram-positive" cell wall stain purple, while the thin "Gram-negative" cell wall appears pink. [ 176 ]
The Tubulinea are a major grouping of Amoebozoa, including most of the more familiar amoebae genera like Amoeba, Arcella, Difflugia and Hartmannella. Characteristics [ edit ]