కశాభము: కూర్పుల మధ్య తేడాలు
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Rajasekhar1961 (చర్చ | రచనలు) కొత్త పేజీ: '''కశాభాలు''' (Flagellum) ఒక విధమైన జీవుల చలనాంగాలు. en:Flagellum |
Rajasekhar1961 (చర్చ | రచనలు) దిద్దుబాటు సారాంశం లేదు |
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పంక్తి 1:
'''కశాభాలు''' (Flagellum) ఒక విధమైన జీవుల చలనాంగాలు.
[[Image:Ecoli flagellum.jpg|thumb|350px|''[[Escherichia coli]]'' cells use long, thin structures called flagella to propel themselves. These flagella form bundles that rotate counter-clockwise, creating a torque that causes the bacterium to rotate clockwise.]]
A '''flagellum''' ({{pron-en|fləˈdʒɛləm}}), plural: ''flagella'' is a tail-like structure that projects from the [[cell body]] of certain [[prokaryotic]] and [[eukaryotic]] cells, and it functions in [[locomotion]].<ref name="pmid12624192">{{cite journal | author = Bardy SL, Ng SY, Jarrell KF | title = Prokaryotic motility structures | journal = Microbiology (Reading, Engl.) | volume = 149 | issue = Pt 2 | pages = 295–304 | year = 2003 | month = February | pmid = 12624192 | doi = 10.1099/mic.0.25948-0 | url = }}</ref><ref name="Lefebvre_2001">{{cite journal | author = Lefebvre PA | title = Assembly and Motility of Eukaryotic Cilia and Flagella. Lessons from Chlamydomonas reinhardtii | journal = Plant Physiol. | volume = 127 | issue = 4 | pages = 1500–1507 | year = 2001 | month = | pmid = 11743094| doi = 10.1104/pp.010807 | url = }}</ref><ref name= JarrellK>{{cite book |author= Jarrell, K (editor)| year=2009 |title=Pili and Flagella: Current Research and Future Trends | publisher=Caister Academic Press | id= ISBN 978-1-904455-48-6}}</ref> An example of a eukaryotic flagellated cell is the [[sperm]] cell, which uses its flagellum to propel itself toward and through the female reproductive tract.<ref name="pmid17148374">{{cite journal | author = Malo AF, Gomendio M, Garde J, Lang-Lenton B, Soler AJ, Roldan ER | title = Sperm design and sperm function | journal = Biol. Lett. | volume = 2 | issue = 2 | pages = 246–9 | year = 2006 | month = June | pmid = 17148374 | doi = 10.1098/rsbl.2006.0449 | url = }}</ref> An example of a flagellated bacterium is the ulcer-causing ''[[Helicobacter pylori]]'', which uses its multiple flagella to propel itself through the mucus lining to reach the stomach [[epithelium]].<ref name="pmid11584108">{{cite journal | author = Lacy BE, Rosemore J | title = Helicobacter pylori: ulcers and more: the beginning of an era | journal = J. Nutr. | volume = 131 | issue = 10 | pages = 2789S–2793S | year = 2001 | month = October | pmid = 11584108 | doi = | url = http://jn.nutrition.org/cgi/content/abstract/131/10/2789S | issn = | format = abstract page }}</ref> Prokaryotic and eukaryotic flagella have some notable differences, such as protein composition, structure, and mechanism of propulsion. Eukaryotic flagella are structurally identical to eukaryotic [[cilia]], although distinctions are sometimes made according to function and/or length.<ref name="pmid6459327">{{cite journal | author = Haimo LT, Rosenbaum JL | title = Cilia, flagella, and microtubules | journal = J. Cell Biol. | volume = 91 | issue = 3 Pt 2 | pages = 125s–130s | year = 1981 | month = December | pmid = 6459327 | doi = 10.1083/jcb.91.3.125s | url = }}</ref>
The word [[Wiktionary:flagellum|''flagellum'']] comes from the [[Latin]] word for [[whip]].
==మూలాలు==
{{మూలాలజాబితా}}
[[en:Flagellum]]
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