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What morphological structure responsible for bacterial motility?
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∙ 8y ago
flagellla
Darien VonRueden
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Purpose of the hanging drop.?
A hanging-drop is used to determine bacterial motility, besides brownian movement.
What are needed for bacterial conjugation pili or flagella?
Pili. Flagella provide the mechanism of motility but does not attach to other bacterias.
Can simple staining techniques be used to identify more than the morphological characteristics of microorganisms?
Yes, you can determine the arrangement of the micoorganism such as chain, random, or spiral as the simple staining allows you to obtained a distinctive contrast between background and its organisms being observed.
What is the function of fimbriae in a bacterial cell?
finger like projections that catch the egg to put it into the uterine tubes
What is myosin?
Myosins are a large family of motor proteins found in eukaryotic tissues. They are responsible for actin-based motility.
What feature bacterial culture will increase the probability of true motility?
motility
What is the structure of motility in paramecium?
cilia
What is the structure motility in Amoeba?
pseudopods
What is the structure of motility in amoeba?
It is pseudopodium
What morphological structure is responsible for bacteria motility?
Bacteria commonly get their motility from an external structure(s) called a flagellum (if they have many, the plural form is flagella). Other motile bacteria have a cellular shape as a spiral (screw). The full mechanism of their motility is not understood. There are many types of spiral bacteria, some with and others without any flagellum. There are also bacteria (e.g. Magnetotactic bacteria and others) that will orient directionally, though not self-induced. They contain minerals such as iron in their cellular structure that orients or moves them slightly within magnetic fields. Other bacteria can also be vertically motile through changes in their bouyancy.
What are the methods used for identifying motility?
There are two basic method to determine motility in a bacterial sample. These samples have similar biochemical identifiers. The first test is a simple drop test. The second method employs a motility medium
Which of the following would be best observed for a bacterial cell using phase contrast microscopy?
Motility
Purpose of the hanging drop.?
A hanging-drop is used to determine bacterial motility, besides brownian movement.
What are needed for bacterial conjugation pili or flagella?
Pili. Flagella provide the mechanism of motility but does not attach to other bacterias.
Why are semisolid media sometimes preferred over techniques for evaluating bacterial motility?
Because it does not inhibit bacteria form "swimming" through the medium.
What type of taxis is a bacterial cell exhibiting when it moves toward glucose in the environment?
Chemotaxis - this is the general term for bacterial motility when sensing a compound in the environment. If moving toward it is called positive chemotaxis, if away from it is negative chemotaxis.
Does Ecoli have a true motility?
Motile according to the Motility-Indole-Ornithine Test.
