- published: 06 Nov 2007
- views: 469888
A flagellum (/fləˈdʒɛləm/; plural: flagella) is a lash-like appendage that protrudes from the cell body of certain prokaryotic and eukaryotic cells. The word flagellum in Latin means whip. The primary role of the flagellum is locomotion but it also often has function as a sensory organelle, being sensitive to chemicals and temperatures outside the cell. Flagella are organelles defined by function rather than structure. There are large differences between different types of flagella; the prokaryotic and eukaryotic flagella differ greatly in protein composition, structure, and mechanism of propulsion. However, both can be used for swimming.
An example of a flagellate bacterium is the ulcer-causing Helicobacter pylori, which uses multiple flagella to propel itself through the mucus lining to reach the stomach epithelium. An example of a eukaryotic flagellate cell is the mammalian sperm cell, which uses its flagellum to propel itself through the female reproductive tract. Eukaryotic flagella are structurally identical to eukaryotic cilia, although distinctions are sometimes made according to function and/or length.
shows d' movement of flagella & cilia in algae
This general microbiology practical lecture explains the structure of bacterial flagellum. For more information, log on to- http://shomusbiology.weebly.com/ Download the study materials here- http://shomusbiology.weebly.com/bio-materials.html Question source - www.indiabix.com
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This video explains the various functions and processes carried out by Cilia and Flagella. This is a product of Mexus Education Pvt. Ltd., an education innovations company based in Mumbai, India. http://www.mexuseducation.com, http://www.ikenstore.in
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This lecture explains the bacterial flagella structure and assembly. It also explains about flagellar motility. http://shomusbiology.com/ Download the study materials here- http://shomusbiology.weebly.com/bio-materials.html This video demonstrates the structure and assembly of flagella and its function in bacterial cell in detail. Source of the article published in description is Wikipedia. I am sharing their material. © by original content developers of Wikipedia. Link- http://en.wikipedia.org/wiki/Main_Page
The entire cell can be viewed as a factory that contains an elaborate network of interlocking assembly lines, each of which is composed of a set of large protein machines. ... Why do we call the large protein assemblies that underlie cell function protein machines? Precisely because, like machines invented by humans to deal efficiently with the macroscopic world, these protein assemblies contain highly coordinated moving parts...
This video describes about cilia and flagella, are hair like outgrowths of the cell membrane. Cilia are small structures which work like oars causing the movement of either the cell or the surrounding fluid. Flagella are longer and responsible for cell movement.
Euglena - Flagellum movement in phase contrast / 1250x
Prinz Eisenherz, leih mir dein Schwert
Ich hab' dich immer so verehrt
Du machst mir Mut, du machst mir Mut
Mit deiner Glut machst du mir Mut
Ich zwing die Welt noch in die Knie
Revolution - jetzt oder nie
Du machst mir Mut, du machst mir Mut
Mit deiner Glut machst du mir Mut
Ich habe Flügel, Flügel
Ab dafür, wir warten nicht mehr
Flügel, Flügel
Ab dafür, wir kriechen nicht mehr
Prinz Eisenherz, leih mir dein Schwert
In Dänemark läuft was verkehrt
Du machst mir Mut, du machst mir Mut
Mit deiner Glut machst du mir Mut
Und auch wenn Träumer meist verlier'n
Die Welt würd' ohne sie krepier'n
Du machst mir Mut, du machst mir Mut
Mit deiner Glut machst du mir Mut
Ich habe Flügel, Flügel
Ab dafür, wir warten nicht mehr
Flügel, Flügel
Ab dafür, wir kriechen nicht mehr
Flügel, Flügel
Ab dafür, wir warten nicht mehr
Flügel, Flügel
Ab dafür, wir kriechen nicht mehr
Flügel, Flügel
Ab dafür, wir warten nicht mehr
Flügel, Flügel
Ab dafür, wir kriechen nicht mehr
Der Mensch ist nicht fähig zu fliegen