Unknown.'s Taschenlehrbuch Biologie: Mikrobiologie PDF

By Unknown.
ISBN-10: 313144861X
ISBN-13: 9783131448613
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Extra info for Taschenlehrbuch Biologie: Mikrobiologie
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Alle ihre Zellen gehen aus einer Mutterzelle hervor und stehen ständig miteinander in Verbindung. Aggregationsverbände Aus Munk, Katharina: Taschenlehrbuch Biologie - Mikrobiologie (ISBN 978-313-144861-3) © 2008 Georg Thieme Verlag KG, Stuttgart Dieses Dokument ist nur für den persönlichen Gebrauch bestimmt und darf in keiner Form an Dritte weitergegeben werden! 2 18 2 Struktur und Funktion der Zellen von Mikroorganismen 2 Abb. 2 Grundformen von Bakterien. a Einzelzellen. b Zellverbände. entstehen durch die Zusammenlagerung von ursprünglich selbstständigen, beweglichen Einzelzellen, die durch eine extrazelluläre Matrix (S.
Untersucht man die Zellen unter dem Phasenkontrastmikroskop, kann auf die zweite Färbung verzichtet werden. m Die Zellwände der Archaea Auch die Archaea besitzen rigide Zellwandsacculi, jedoch findet sich bei ihnen kein universell verbreitetes Zellwandpolymer. In keinem Fall wird Murein gebildet, daher sind alle Archaea resistent gegenüber Lysozym und Penicillin. Nur bei einigen Vertretern der Methan bildenden und der halophilen Archaea wurden Zellwände aus Polysacchariden gefunden. Einige MethanobacteriumSpezies bilden Zellwände aus einem Polysaccharid, das aufgrund seiner Ähnlichkeit zum Peptidoglykan der Bacteria als Pseudopeptidoglykan oder Pseudomurein bezeichnet wird (Abb.
265) in Habitaten mit ungünstigem Nährstoffangebot. Aggregationsverbände sind auch bei Myxobakterien und Schleimpilzen verbreitet. Abhängig von der Spezies verschmelzen bei Schleimpilzen die Protoplasten der Einzelzellen zu einem vielkernigen Plasmodium oder bleiben als selbstständige Zellen erhalten. Zelle: Kleinste lebens- und vermehrungsfähige Einheit, Grundbaustein aller Lebewesen. Zwei grundsätzlich in Struktur und Organisation unterschiedliche Zelltypen. – Eukaryoten: Besitzen echten Zellkern, Kompartimente, 80S-Ribosomen, Organellen.
Taschenlehrbuch Biologie: Mikrobiologie by Unknown.
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