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Bacterium
See bacteria (plural) for definition and additional information.
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bacterium pl. bacteria
A prokaryotic microorganism in Domain Bacteria.
balanced polymorphism ...
Bacterium: A single-celled microscopic plant-like organism that does not produce chlorophyll.
Beak: Colloquial expression for the protruding mouthpart structures of a sucking insect (= proboscis).
Bacterium (plural: bacteria) A one-celled microorganism that contains no nucleus. Some bacteria are helpful, such as those in the intestines that help digest food, while others cause disease.
bacterium (plural: bacteria). A single-celled, microscopic, plantlike organism that lacks a nucleus. Most bacteria obtain their nitrogen and energy from organic matter; some bacteria cause plant or animal diseases.
Bacterium. A single-celled, microscopic prokaryotic organism: a single cell organism without a distinct nucleus.
Agrobacterium tumefaciens: A gram-negative, rod-shaped flagellated bacterium responsible for crown gall tumor in plants.
Agrobacterium tumefaciens: A soil bacterium that causes a cancer-like plant disease (crown gall) in dicotyledenous plants (all agricultural crops except cereals). It contains the Ti plasmid.
Mycobacterium leprae
M. leprae causes leprosy (Hansen's disease). It is an intracellular parasite, taking up residence in Schwann cells where, in due course, it triggers an autoimmune attack on them that leads to their destruction.
Methanobacterium thermoautotrophicum
This organism is a member of the archaea, one of the three major kingdoms into which all living things can be classified (the other two are bacteria, ...
A bacterium may undergo conjugation. During this process, genetic material is transferred to another bacterium through the sex pili. To form sex pili and donate DNA during conjugation, an F plasmid is required.
A bacterium is a prokaryotic cell
The simplest and most primitive of cells are the prokaryotic cells (pro means before and caryon refers to the nucleus). Prokaryotic cells are much smaller than eukaryotic cells.
A bacterium that kills insects; a major component of the microbial pesticide industry.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
- Bacterium. Causative agent of bacterial leaf streak in rice
Xanthophylls ...
A bacterium just discovered in past few years and shown to be the cause of most stomach ulcers. Has led to treatment of ulcers with antibiotics rather than just antacids.
2.7 Artemia ...
A bacterium is resistant to the antibiotic Ampicillin.
Related
Antibiotic resistance ...
A bacterium (plural: bacteria) is a unicellular microorganism. Typically a few micrometres in length, individual bacteria have a wide-range of shapes, ranging from spheres to rods to spirals.
The bacterium has one chromosome, which is made of DNA, and it directs the synthesis of all the proteins it needs to survive, to grow, and to multiply. In addition, it can acquire other genes for lots of different traits.
The bacterium Clostridium tetani produces a toxin that prevents the release of GABA. GABA is important in control of skeletal muscles.
Nanobacterium
External links
Prion Diseases and the BSE Crisis (1997). Article from Science magazine by Stanley Prusiner, discoverer of prions.
The Prion Diseases (1995). Article from Scientific American magazine by Stanley Prusiner.
Common bacterium that has been studied intensively by geneticists because of its small genome size, normal lack of pathogenicity, and ease of growth in the laboratory.
Eugenics ...
The host bacterium takes up the plasmid, which includes the foreign gene.
When the bacteria reproduces, the plasmids are also reproduced. The gene is cloned.
methanogen A bacterium that obtains energy from CO2 and H2 and forms methane.
metraterm Muscular, distended termination of the uterus of a digenetic trematode.
MHC See major histocompatibility complex.
Lysogenic bacterium A bacterial cell whose chromosome contains a prophage.
Lytic bacteriophage A phage that replicates in its host and then lyses, or destroys, it.
Any foreign substance, such as a virus, bacterium, or protein, that elicits an immune response by stimulating the production of antibodies. (See Antigenic determinant, antigenic switching.) Antigenic determinant.
Bacteriophage -- a virus whose host is a bacterium; commonly called phage. Barr body -- the condensed single X-chromosome seen in the nuclei of somatic cells of female mammals.
Gonorrhea is another common sexually transmitted disease caused by Neisseria gonorrhoeae, a bacterium.
Varon (1979) introduced the parasitic bacterium Bdellovibrio into a chemostat with the luminescent bacterium Photobacterium leiognathi growing in steady state.
pst encodes a plasminogen activator which is important (but not essential for) subcutaneous dissemination allowing better movement of the bacterium through the circulatory system of the infected individual.
Those that do include hyperthermophilic Thermotogales (which also employ di-l-Ins-1,1´-phosphate) and actinomycetes such as Mycobacterium spp.
Now consider a living thermodynamic system, for example a bacterium. As the bacterium is exposed to 50° C, ...
To clone a piece of DNA, one would insert it into some type of vector (say, a plasmid) and put the resultant construct into a host (usually a bacterium) so that the plasmid and insert replicate with the host.
Cell Wall - Each bacterium is enclosed by a rigid cell wall composed of peptidoglycan, a protein-sugar (polysaccharide) molecule. The wall gives the cell its shape and surrounds the cytoplasmic membrane, protecting it from the environment.
The classic example is an amoeba eating a bacterium. First, the cell senses the bacterium because of chemicals in the environment. The cell then moves towards the prey.
Based on the naturally occurring F-factor plasmid found in the bacterium Escherichia coli.
Related Terms:
Cloning vector ...
noun Is frequently used to mean a DNA molecule which has been replicated in a micro-organism such as a bacterium or yeast to make many thousands or millions of identical molecules.
The average number of phage released from a single infected bacterium during lytic growth. The burst size depends upon both the phage itself and the growth conditions of the bacteria.
A microscopic bacterium responding to a local gradient in sugar is as much responding to its environment as a lion is responding to its environment when it is searching for food in the African savannah.
For the bacterium Escherichia coli, the image would be 80 kilometers long. And for a typical piece of DNA from a eukaryote cell, the image would stretch for 1600 kilometers, about as far as it is from Dallas to Washington, D. C.! ...
Colony Forming Unit (CFU)‚ a bacterium or small number of bacteria which grow into one observable colony on a nutrient medium
Comet heavenly body with long‚ luminous tail and elliptical orbit
(cometa = the hair of the head) ...
bacteriophages
a type of virus that infects bacteria. Infection with a bacteriophage may or may not lead to the death of the bacterium, depending on the phage and sometimes on conditions. Each bacteriophage is specific to one form of bacterium.
a microscopic organism such as a bacterium or a protozoan
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
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a chronic disease of cattle, sheep and goats, caused by infection by Mycobacterium paratuberculosis (M. Johnei) which causes a chronic enteritis affecting the small intestine, caecum and colon; the main symptoms are diarrhoea and emaciation ...
bacteriophage - virus (phage) that infects a bacterium
chemotrophs - organisms that derive energy from inorganic reactions
constitutive - enzyme always synthesized and ready ...
A microbiome is all of the genetic material found within an individual microbe such as a bacterium, fungal cell, or virus. It also may refer to the collection of genetic material found in a community of microbes that live together.
An organism lacking a true nucleus, such as a bacterium or an archeon.
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mitochondria - membrane-bounded organelle, about the size of bacterium, that carriesout oxidative phosphorylation and produces most of the ATP in eucaryotic cells.
flagellum - a whip-like filament projecting from a bacterium or zoospore and functioning as an organ of locomotion. Also called a cilium. (Glossary of PM) ...
T-DNA The portion of the Agrobacterium tumafaciens Ti plasmid (including the terminal repeats) that is integrated into the host genome.
Taq POLYMERASE - A DNA polymerase which is very stable at high temperatures, isolated from the thermophilic bacterium Thermus aquaticus. Very useful in PCR reactions which must cycle repetitively through high temperatures during the denaturation step.
A vector used to clone DNA fragments of 100 to 300 kb insert size (average of 150 kb) in Escherichia coli cells. Based on the naturally occurring F-factor plasmid found in the bacterium Escherichia coli.
Mitochondria
Surrounded by a double membrane with a series of folds called cristae. Functions in energy production through metabolism. Contains its own DNA, and is believed to have originated as a captured bacterium.
 See also: Bacteria, Organ, Trans, Cells, Protein
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