Amøbe
En amøbe er en encellet organisme, der kan danne pseudopodier (sv), midlertidige udvækster der bruges til bevægelse eller til at omslutte føde.[1&#
En amøbe er en encellet organisme, der kan danne pseudopodier (sv), midlertidige udvækster der bruges til bevægelse eller til at omslutte føde.[1] Amøber udgør ikke en enkelt taksonomisk gruppe, men en stor del af dem er protister i gruppen Amoebozoa.
Nogle amøber lever frit i vand, fx Amoeba proteus (en) der er en populær modelorganisme på grund af sin, for amøber, betragtelige størrelse. Andre amøber er parasitter, fx tarmparasitten Entamoeba histolytica der hos mennesker kan forårsage dysenteri.
En amøbe er indehaver af en biologisk rekord: Det største genom er bestemt for Polychaos dubium (en) med 670 milliarder basepar. Til sammenligning har det humane genom kun 3,2 milliarder basepar.[kilde mangler]
I 2008 blev den 2,5 cm store kugleformede amøbe Gromia sphaerica (de) fundet ved Bahamas nær Little San Salvador Island (en). Den bevæger sig ved at rulle hen over havbunden[2].
Se også
Kilder/referencer
- ^ Microworld. https://arcella.nl/introduction/. Hentet 2026-07-06.
- ^ Duke University (2008, December 4). Rolling 'Sea Grape' Rocks The Fossil Record. ScienceDaily. Retrieved December 7, 2008 Citat: "...The grape-like animal, tentatively named the Bahamian Gromia, is actually a single-celled organism, fully one inch long...But what makes it really fantastic is that it moves -- very slowly -- by rolling itself along the ocean floor...Matz worked out the genetics of the new creature and found it's a giant amoeba closely related to similar blobs found in the Gulf of Oman, near Antarctica, off Guam, and in the Mediterranean. None of them are known to move..."
Eksterne henvisninger
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Wikimedia Commons har medier relateret til: |
- Die Amoebe (Amoeba proteus) Arkiveret 27. april 2004 hos Wayback Machine
- Images of Protista (Protoctista)/ Protozoan/ Phylum Rhizopoda (Amoebas or Amebas)
- Amøbedysenteri - amøbiasis. Sundhedsguiden.dk Arkiveret 15. november 2012 hos Wayback Machine
- Hvad er Amøbedysenteri. Netdoktor.dk
- Forbløffende skabning opdaget i Nivå bugt. Videnskab.dk
- Kidnapning af bakterie blev starten på alle planter. Videnskab.dk
- How fast does an Amoeba travel?: Citat: "...0.5 and 3.0 microns per second..."
- BBCNews: 27 September, 2000, When slime is not so thick Citat: "...It means that some of the lowliest creatures in the plant and animal kingdoms, such as slime and amoeba, may not be as primitive as once thought...."
- biocab.org: Amoeba Clasif Arkiveret 1. august 2003 hos Wayback Machine
- Tree of Life: Amoeba
- Taxonomicon – Genus Amoeba
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