Bakterien/en: Unterschied zwischen den Versionen

Version vom 16. April 2019, 21:23 Uhr

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Bacteria are very small, unicellular organisms, so-called microorganisms. They are usually between 0.2 and 2.0 micrometers in size and multiply by simple transverse division. Bacterial cells do not have a solid cell nucleus. The DNA of the bacteria is therefore available at ″nackt″ in the cytoplasm of the cell. Because of this special property, bacteria are classified as prokaryotes. The word is derived from the Greek words pró (instead) and káryon (core) and therefore means as much as core replacement. In contrast, in plant, animal and human cells the DNA is protected in a cell nucleus. They are therefore counted among the Eukaryotes. The term derives from the Greek words eu~ (good, wohl) and káryon (core).

https://de.wikipedia.org/wiki/Bakterien _{(Wikipedia CC-by-sa-3.0)}

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-Bakterien sind sehr kleine, einzellige Lebewesen, so genannte Mikroorganismen. Sie sind meistens zwischen 0,2 und 2,0 Mikrometer groß und vermehren sich durch einfache Querteilung. Bakterielle [[Zelle]]n besitzen keinen festen Zellkern. Die [[DNA]] der Bakterien liegt daher ″nackt″ im [[Zytoplasma]] der Zelle vor. Wegen dieser besonderen Eigenschaft zählt man die Bakterien zu den [[Prokaryoten]]. Das Wort leitet sich von den griechischen Worten pró (anstatt) und káryon (Kern) ab und bedeutet demnach soviel wie Kernersatz. Im Gegensatz dazu liegt in pflanzlichen, tierischen und menschlichen Zellen die [[DNA]] geschützt in einem [[Zellkern]]. Man zählt sie deshalb zu den [[Eukaryoten]]. Der Begriff leitet sich von den griechischen Worten eu~ (gut, wohl) und káryon (Kern) ab.
+Bacteria are very small, unicellular organisms, so-called microorganisms. They are usually between 0.2 and 2.0 micrometers in size and multiply by simple transverse division. Bacterial [[cell]]s do not have a solid cell nucleus. The [[DNA]] of the bacteria is therefore available at ″nackt″ in the [[cytoplasm]] of the cell. Because of this special property, bacteria are classified as [[prokaryotes]]. The word is derived from the Greek words pró (instead) and káryon (core) and therefore means as much as core replacement. In contrast, in plant, animal and human cells the [[DNA]] is protected in a [[cell nucleus]]. They are therefore counted among the [[Eukaryotes]]. The term derives from the Greek words eu~ (good, wohl) and káryon (core).
 https://de.wikipedia.org/wiki/Bakterien <sub>([https://de.wikipedia.org/wiki/Wikipedia:Lizenzbestimmungen_Commons_Attribution-ShareAlike_3.0_Unported Wikipedia CC-by-sa-3.0])</sub>