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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 ...
Amoeba, like other unicellular eukaryotic organisms, reproduces asexually by mitosis and cytokinesis. Sexual phenomena have not been directly observed in Amoeba , although sexual exchange of genetic material is known to occur in other Amoebozoan groups. [ 15 ]
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 ...
Many of these amoeba-resistant microorganisms (ARMs) survive either in the amoeba cytoplasm or in host derived vacuoles surrounded by plasma membrane, [6] allowing them to not only avoid digestion, but actively reproduce inside their host with some are capable of lysing the amoeba host cell. [7]
Echinamoeba thermarum primarily reproduces asexually through binary fission during the trophozoite stage. This method allows for rapid population increases in suitable environments. The specific mechanisms of reproduction during encystation and subsequent germination are less understood but are crucial for survival in extreme habitats
Life cycle. Dictyostelium discoideum is a species of soil-dwelling amoeba belonging to the phylum Amoebozoa, infraphylum Mycetozoa.Commonly referred to as slime mold, D. discoideum is a eukaryote that transitions from a collection of unicellular amoebae into a multicellular slug and then into a fruiting body within its lifetime.
They reproduce through flagellated spores that infect dinoflagellates, ... [104] (such as Amoeba itself), [105] among which is a genus of sorocarp-forming slime ...
For simple unicellular microorganisms such as the amoeba, one cell division is equivalent to reproduction – an entire new organism is created. On a larger scale, mitotic cell division can create progeny from multicellular organisms, such as plants that grow from cuttings.