The Eubacteria, also called just "bacteria," are one of the three main domains of life, along with the Archaea and the Eukarya. Eubacteria are prokaryotic, meaning their cells do not have defined, membrane-limited nuclei. As a group they...
Bacteria are tiny organisms that are larger than viruses but can be seen only with the aid of a microscope. Although small, they are large in number and variety. Bacteria flourish in every possible habitat on earth--in the air, soil, and water, as well...
Bacteria are tiny organisms that are larger than viruses but can be seen only with the aid of a microscope. Although small, they are large in number and variety. Bacteria flourish in every possible habitat on earth--in the air, soil, and water, as well...
Bacteria are one-celled organisms that lack a nucleus defined by a nuclear membrane and the organelles that are associated with eukaryotic cells. Bacteria are prokaryotes that maintain their genetic material, DNA, in a long circular molecule. Bacteria...
Infectious diseases depend on the interplay between the ability of pathogens to invade and/or proliferate in the body and the degree to which the body is able to resist. If the ability of a microorganism to invade, proliferate, and cause damage in the...
Infectious diseases depend on the interplay between the ability of pathogens to invade and/or proliferate in the body and the degree to which the body is able to resist. If the ability of a microorganism to invade, proliferate and cause damage in the...
Bacteria have been designed to be adaptable. Their surrounding layers and the genetic information for these and other structures associated with a bacterium are capable of alteration. Some alterations are reversible, disappearing when the particular...
Swimming advisories are warnings to the public that contact with beach water could cause an illness. Advisories may be issued after water monitoring, testing that reveals potentially harmful bacteria levels. Water monitoring assesses levels of E....
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. Most are about 1 micron (1...
Bacterial ultrastructure is concerned with the cellular and molecular construction of bacteria. The bulk of research in bacterial ultrastructure investigates the ultrastructure of the cell wall that surrounds bacteria. The study of bacterial...
The stomach and gastrointestinal tract are not sterile and are colonized by microorganisms that perform functions beneficial to the host, including the manufacture of essential vitamins, and the prevention of colonization by undesirable microbes. The...
Bacteremic is a term that refers to the ability of a bacterium to multiply and cause an infection in the bloodstream. The invasion of the bloodstream by the particular type of bacteria is also referred to as bacteremia. If the invading bacteria also...
Attractants and repellents are compounds that stimulate the directed movement of microorganisms, in particular bacteria, towards or away from the compound. The directed movement in response to the presence of the attractant or repellent compound is a...
Sheathed bacteria are bacteria that grow as long filaments whose exterior is covered by a layer known as a sheath. Within the sheath, the bacteria can be capable of growth and division. Examples of sheathed bacteria include Leptothrix discophora (also...
The Eubacteria are the largest and most diverse taxonomic group of bacteria. Some scientists regard the Eubacteria group as an artificial assemblage, merely a group of convenience rather than a natural grouping. Other scientists regard Eubacteria as...
The eubacteria are the largest and most diverse taxonomic group of bacteria. Some regard this as an artificial assemblage, merely a group of convenience rather than a natural grouping. The eubacteria are all easily stained, rod-shaped or spherical...
Single cell microorganisms which take in soluble food for conversion to new cells. Bacteria exist as single cells, in chains and in clusters. Reproduction is by binary fission. A few have photosynthetic pigment. Bacteria have rod, spherical or spiral...
