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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 ...
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.
Amoeba, Entamoeba histolytica uses holozoic nutrition. Holozoic nutrition (Greek: holo -whole ; zoikos -of animals) is a type of heterotrophic nutrition that is characterized by the internalization ( ingestion ) and internal processing of liquids or solid food particles. [ 1 ]
The most important genera are Amoeba and Chaos, which are set apart from the others by longitudinal ridges. The best known of the species in this family is Amoeba proteus, commonly used in classrooms to demonstrate movement by pseudopodia.
Many species of Archamoebae, a more basal group, are anaerobic amoeboflagellates. [10] Other examples are the dictyostelians, another group of slime molds, [11] and the closely related varioseans, such as Phalansterium. [7] Breviatea, a small class [a] related to animals, fungi and amoebozoans, is composed of anaerobic amoeboflagellates with ...
Diagram of the soil food web, taking into account the diverse roles of protists as not just bacterivores, but also mycophages and omnivores. [137] Arrows show the flow of nutrients. In the trophic webs of soils, protists are the main consumers of both bacteria and fungi, the two main pathways of nutrient flow towards higher trophic levels. [176]
These dedicated structures are not necessary for swimming, though, as there are amoeba and other eukaryotic cells which lack flagella and cilia but can still swim, although it is slower than crawling or gliding. [9] [10] [12] There are two different proposed mechanisms for amoeboid swimming. In the first the cell extends small pseudopods which ...
Class Archamoebea Cavalier-Smith 1983 stat. nov. 2004. Order Entamoebida Cavalier-Smith 1993. Family Entamoebidae Chatton 1925 em. Cavalier-Smith 1993. Genus †Entamoebites Poinar & Boucot 2006; Genus Entamoeba Casagrandi & Barbagallo 1895; Order Pelobiontida Page 1976 em. Cavalier Smith 1987. Suborder Pelomyxina Starobogatov 1980. Family ...