Actually, most bacteria are harmless. Bacteria can be found virtually everywhere! In soil, water, bodies, and pretty much anywhere you can think of!! There are LOTS of bacteria out there!
I spent a long time working on it! I learned a lot from doing this website!! I hope you did too! Home Page. In most cases, rotating structures called flagella enable them to move. The term flagella is also used to refer to similar motility structures in protists and other eukaryotic cells, but the two are not the same and should not be confused.
Prokaryotic flagella are composed of protein subunits called flagellin, while eukaryotic flagella are made of arrays of microtubules made of tubulin.
Prokaryotic flagella are anchored in the plasma membrane and move in a spiral motion. Eukaryotic flagella are enclosed by the plasma membrane and can only move by beating back and forth. Exceptions to this structure of prokaryotic flagella are found in some species of spirochetes, whose flagella resemble those of eukaryotes. It is believed that eukaryotes may have developed flagella through symbiotic relationships with these spirochetes.
Eubacteria are often classified by their shape. They fall into three main shape categories. Spherical eubacteria are called cocci ; rod-shaped eubacteria are known as bacilli ; spiral or helically-shaped eubacteria are spirilla. The Pilus is a bridge-like structure that one bacterium uses to connect with another bacteria.
The first bacteria transfers all or part of its chromosome to the second bacterium through the pilus. Now the second bacteria has a mix of genetic material. This bacteria reproduces by Binary fission and now there are two cells with the new genetic material.
Eubacteria can move freely and an be found everywhere. So they are often Pathogenic, meaning the can move freely. The bacteria whips its flagella around to help it move in the correct direction. Bacteria can have more than one flagella. As of now, scientist do not know of any endangered species of bacteria. There are three major known groups of Archaebacteria: methanogens, halophiles, and thermophiles.
The methanogens are anaerobic bacteria that produce methane. They are found in sewage treatment plants, bogs, and the intestinal tracts of ruminants. Ancient methanogens are the source of natural gas.
Eubacteria are typically classified into Gram-positive, Gram-negative, and Miscellaneous. While there are many phyla of eubacteria under the Domain Bacteria, these relationships are often changing and are still being defined based on new DNA experiments. Eubacteria do not have nucleus and cell organelles. They have single circular DNA and numerous plasmids small circular pieces of DNA in cytoplasm and cell wall made of chains of peptidoglycan.
Some Eubacteria can induce serious diseases such as tuberculosis, meningitis, anthrax, leprosy, cholera and tetanus. Eubacteria more commonly known as bacteria are prokaryotic microorganisms that can be found almost everywhere on Earth. They are usually single cells but can also be found in chains, filaments , or multicellular clusters. All animals are eukaryotic, multicellular organisms, and most animals have complex tissue structure with differentiated and specialized tissue. Animals are heterotrophs; they must consume living or dead organisms since they cannot synthesize their own food and can be carnivores, herbivores, omnivores, or parasites.
The third is spiral or helically-shaped eubacteria called spirilla. Cause abscesses, boils, and other infections of the skin. Cocci can often be found in the nose and on the skin without causing disease, but it is also responsible for causing conditions such as pneumonia, meningitis and toxic shock syndrome.
Examples of Eubacteria. Eubacteria are common bacteria. Like archaebacteria, eubacteria are complex and single celled.
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