Which of the following scenarios is an example of bacterial motility?
Swarming motility is a rapid (2–10 μm/s) and coordinated translocation of a bacterial population across solid or semi-solid surfaces and is an example of bacterial multicellularity and swarm behaviour. Swarming motility was first reported in 1972 by Jorgen Henrichsen. Non-motile
Types of Gliding Motility in Bacteria a) Type IV Pili: A cell attaches its pili to a surface or object in the direction it is traveling. The proteins in the pili are then broken down to shrink the pili pulling the cell closer to the surface or object that was it was attached to. b) Specific Motility Membrane Proteins: Transmembrane proteins are attached to the host surface.
L. monocytogenes is a Gram-positive non- spore-forming motile facultatively anaerobic rod-shaped bacterium. It is catalase-positive and oxidase-negative and expresses a beta hemolysin which causes destruction of red blood cells. This bacterium exhibits characteristic tumbling motility when viewed with light microscopy.
Gliding motility - Wikipedia
Intracellular parasite - Wikipedia
Haemophilus influenzae - Wikipedia
Type three secretion system - Wikipedia
C. tetani is a rod-shaped Gram-positive bacterium typically up to 0.5 μm wide and 2.5 μm long. It is motile by way of various flagella that surround its body. C. tetani cannot grow in the presence of oxygen. It grows best at temperatures ranging from 33 to 37°C.
Thu Sep 29 2005 14:30:00 GMT-040...
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