Flagella: Difference between revisions
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Flagella are long protusions on the back of a cell such as the tail of the [[Sperm|sperm]] cell. They can propel a cell through liquid or fluid mediums via their undulation and fluctation. [[Eukaryotic flagella|Eukaryotic flagella]] are enlongated versions of [[Cilia|cilia]] whereas [[Bacterial flagella|bacterial flagella]] are completely different both in structure and mechansims <ref>Albert, B. et al. (2008) Molecular Biology of the Cell. New York: Garland Publishing</ref>. | Flagella are long protusions on the back of a cell such as the tail of the [[Sperm|sperm]] cell. They can propel a cell through liquid or fluid mediums via their undulation and fluctation. [[Eukaryotic flagella|Eukaryotic flagella]] are enlongated versions of [[Cilia|cilia]] whereas [[Bacterial flagella|bacterial flagella]] are completely different both in structure and mechansims <ref>Albert, B. et al. (2008) Molecular Biology of the Cell. New York: Garland Publishing</ref>. | ||
[[Bacterial flagella|Bacterial flagella]] are made entirely of protein and have a diameter of around 12-30nm. Several thousand protein subunit molecules of [[Flagellin|Flagellin]] make up one bacterial flagellum, of these molecules there are two types. Three types of flagella arrangement are understood to occur: monotrichous, peritrichous and lophotrichous. Monotrichous flagellum are single and [[Polar]], a peritrichous arrangement occurs with flagella over the entire cell surface, whilst lophotrichous arrangements occur when there are many polar flagellum <ref>Brooks et al: Jawetz, Melnick &amp;amp;amp;amp; Adelberg's Medical Microbiology, 24th edition, The McGraw-Hill Compaines, Inc, 2007</ref>. | |||
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Revision as of 07:16, 23 October 2012
Flagella are long protusions on the back of a cell such as the tail of the sperm cell. They can propel a cell through liquid or fluid mediums via their undulation and fluctation. Eukaryotic flagella are enlongated versions of cilia whereas bacterial flagella are completely different both in structure and mechansims [1].
Bacterial flagella are made entirely of protein and have a diameter of around 12-30nm. Several thousand protein subunit molecules of Flagellin make up one bacterial flagellum, of these molecules there are two types. Three types of flagella arrangement are understood to occur: monotrichous, peritrichous and lophotrichous. Monotrichous flagellum are single and Polar, a peritrichous arrangement occurs with flagella over the entire cell surface, whilst lophotrichous arrangements occur when there are many polar flagellum [2].
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