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Topics related to "Prokaryote"

eukaryote
eukaryote , a cell or organism composed of cells that have a membrane-bound nucleus and organelles (mitochondria, chloroplasts; see cell , in biology) and genetic material organized in chromosomes in which the DNA is combined with histone proteins. Eukaryotes are contrasted with the prokaryotes (... Read more
Monera
Monera taxonomic kingdom that comprises the prokaryotes ( bacteria and cyanobacteria ). Prokaryotes are single-celled organisms that lack a membrane-bound nucleus and usually lack membrane-bound organelles (mitochondria, chloroplasts; see cell , in biology). They have a small ring of DNA as thei... Read more
cyanobacteria
cyanobacteria or blue-green algae, photosynthetic bacteria that contain chlorophyll. For many years they were classified in the plant kingdom along with algae , but discoveries made possible by the electron microscope and new biochemical techniques have shown them to be prokaryotes more simi... Read more
Archaebacteria
Archaebacteria , diverse group of bacteria (prokaryotes), sometimes called the archaea and considered a major group unto themselves. Archaebacteria are contrasted with the Eubacteria, from which they differ biochemically in the arrangement of the bases in their ribosomal RNA and in the composition... Read more
Protista
Protista or Protoctista , in the five-kingdom system of classification, a kingdom comprising a variety of unicellular and some simple multinuclear and multicellular eukaryotic organisms. Protists, which are eukaryotes , have cells that have a membrane-bound nucleus, DNA that is associated with ... Read more
cell
cell in biology, the unit of structure and function of which all plants and animals are composed. The cell is the smallest unit in the living organism that is capable of integrating the essential life processes. There are many unicellular organisms, e.g., bacteria and protozoans , in which the s... Read more
animal
animal any member of the animal kingdom (kingdom Animalia), as distinguished from organisms of the plant kingdom (kingdom Plantae) and the kingdoms Fungi , Protista , and Monera in the five-kingdom system of classification. (Another classification system, suggested by genetic sequencing studi... Read more
Ribosome
Ribosome Ribosomes are the cellular organelles that carry out protein synthesis, through a process called translation . They are found in both prokaryotes and eukaryotes , these molecular machines are responsible for accurately translating the linear genetic code, via the messenger RNA, into ... Read more
algae
algae [plural of Lat. alga =seaweed], a large and diverse group of primarily aquatic plantlike organisms. These organisms were previously classified as a primitive subkingdom of the plant kingdom, the thallophytes (plants that lack true roots, stems, leaves, and flowers). More recently, most alg... Read more
streptococcus
streptococcus , any of a group of gram-positive bacteria, genus Streptococcus, some of which cause disease. Streptococci are spherical and divide by fission, but they remain attached and so grow in beadlike chains. The incidence and severity of streptococcal diseases decreased dramatically after t... Read more

Encyclopedia entries related to "Prokaryote"

Prokaryote
Encyclopedia entry from: The Gale Encyclopedia of Science Prokaryote Prokaryotes are single-celled organisms such as bacteria that have no...other small organelles found in the larger eukaryotic cells. A typical prokaryote is bound by a plasma membrane and a cell wall. Within this double boundary...
prokaryote
Book article from: World Encyclopedia prokaryote (formerly Monera ) Any member of the biological kingdom (Prokaryotae); it includes bacteria and cyanobacteria (formerly blue...
Cell
Encyclopedia entry from: UXL Encyclopedia of Science ...recognized in living things: prokaryotes and eukaryotes. The word prokaryote literally means "before the nucleus." As the name suggests...function of cells The basic structure of all cells, whether prokaryote and eukaryote, is the same. All cells have an outer covering...
Microbiology
Encyclopedia entry from: Encyclopedia of Food and Culture ...bacteria, fungi, algae, protozoa, and viruses. Bacteria are prokaryotes; the other microorganisms are eukaryotes. Prokaryote cells lack a nuclear membrane and membrane-bound organelles. Recently, bacteria have been divided into eubacteria and...
Bacteria
Encyclopedia entry from: The Gale Encyclopedia of Science ...contained in a single, circular chain of deoxyribonucleic acid (DNA) that is not enclosed within a nuclear membrane. The word prokaryote is derived from Greek meaning “ prenucleus. ” Moreover, the DNA of prokaryotes is not associated with...
domain
Book article from: World Encyclopedia ...In taxonomy , some experts recognize the domain as a higher category than kingdom . In this scheme, the two subkingdoms of Prokaryote ( Archaebacteria and Eubacteria ) constitute two domains, called Archaea and Bacteria, while all other living organisms...
Archaebacteria
Book article from: World Encyclopedia Archaebacteria Sub-kingdom of the kingdom Prokaryote , which, on the basis of both RNA and DNA composition and biochemistry, differs significantly from other bacteria . They are...
Chromosome
Encyclopedia entry from: UXL Encyclopedia of Science ...organism's development. Eukaryote: A cell with a distinct nucleus. Nucleotide: The building blocks of nucleic acids. Prokaryote: A cell without a nucleus. Protein: Large molecules that are essential to the structure and functioning of all living cells...
Recombinant DNA
Encyclopedia entry from: The Gale Encyclopedia of Science ...recombination can involve the DNA from two eukaryotic organisms, two prokaryotic organisms, or between an eukaryote and a prokaryote. An example of the latter is the production of human insulin by the bacterium Escherichia coli, which has been achieved...
Biology
Encyclopedia entry from: The Gale Encyclopedia of Science ...without magnification under a microscope. Molecular biology — The study of the cellular structure of living units. Prokaryote — A cell that lacks a distinct nucleus, such as bacterium or alga. Spontaneous generation — Also known...

Dictionary entries related to "Prokaryote"

prokaryote
Book article from: A Dictionary of Zoology prokaryote A single-celled organism in which the cell lacks a true nucleus and the DNA is present as a loop in the cytoplasm rather than...
procaryote
Book article from: The Oxford Pocket Dictionary of Current English pro·car·y·ote • n. variant spelling of prokaryote .
bacterium
Book article from: A Dictionary of Plant Sciences bacterium 1. A single bacterial cell. 2. A particular prokaryotic organism (see PROKARYOTE ).
ribosome
Book article from: A Dictionary of Biology ...coefficients (i.e. their rates of sedimentation in an ultracentrifuge), which are measured in Svedberg units (symbol S). The prokaryote (70S) ribosome comprises a 50S (large) subunit and a 30S (small) subunit; the eukaryote (80S) ribosome has large...
Monera
Book article from: A Dictionary of Biology Monera See prokaryote .
consensus sequence
Book article from: A Dictionary of Biology ...Although such sequences may vary from case to case, it is possible to derive the most likely sequence overall. An example is the Pribnow box of prokaryote promoters. The term is also applied to sequences of amino acids in polypeptides.
cell
Book article from: A Dictionary of Ecology ...cytoplasm and nuclear material, but often having a more complex structure. Simple organisms are unicellular, but more complex organisms consist of many co-operating cells. Cells may be eukaryote or prokaryote . 2. See mass provisioning .
cell wall
Book article from: A Dictionary of Plant Sciences ...salts. Cell walls provide a skeletal support to the whole plant and also a barrier against injury and infection. 2. (of prokaryote) A rigid wall structure that lies inside the capsular layer, but outside the plasma membrane of cells. In cyanobacteria...
expression vector
Book article from: A Dictionary of Biology ...proteins are extensively modified during or following their synthesis, for example by the addition of carbohydrate groups. Prokaryote host cells are unable to accomplish these modifications, and therefore expression systems based on eukaryotic cells must...
complementary DNA
Book article from: A Dictionary of Biology ...unlike genomic DNA, it contains no noncoding sequences ( introns ). cDNA is used in gene cloning for the expression of eukaryote genes in prokaryote host cells, or as a gene probe to locate particular base sequences in genomic DNA.

Related newspaper, magazine, and trade journal articles from HighBeam Research

Dissing a loaded label for some unicellular life: prominent biologist calls 'prokaryote' outdated term.(STORY ONE)(Norman Pace )
Magazine article from: Science News; 4/11/2009; ; 700+ words ; ...studying microorganisms. It's the term prokaryote that he doesn't like. At the American...membrane-bound organelles. The very name prokaryote implies that the microbes are precursors...to put aside the outdated concept of prokaryote and use the terms that reflect the branches...
Observation of Magnetoreceptive Behavior in a Multicellular Magnetotactic Prokaryote in Higher than Geomagnetic Fields
Magazine article from: Biophysical Journal; 2/1/2005; ; 700+ words ; ...ABSTRACT The magnetotactic multicellular prokaryote (MMP), a motile aggregate of bacterial...microbes is the magnetotactic multicellular prokaryote (MMP; Farina et al., 1983), an...the term "magnetotactic multicellular prokaryote". The MMP studied generally contain...
ChIP-on-chip prokaryote arrays.(Product News)
Magazine article from: Bioscience Technology; 11/1/2006; 442 words ; ChIP-on-chip microarray family includes four prokaryote species: Escherichia coli 0157, Salmonella typhimurium LT2, Salmonella typhimurium SL1344 and Streptomyces coelicolor. Chip2...
Ultraviolet-light-absorbing tunic cells in didemnid ascidians hosting a symbiotic photo-oxygenic prokaryote, Prochloron.
Magazine article from: The Biological Bulletin; 4/1/2003; ; 700+ words ; ...sunscreen for the symbionts as well as the host. In tropical waters, some didemnid ascidians host the symbiotic photo-oxygenic prokaryote Prochioron (for review see 14). The symbiont cells are usually sequestered within the host colony under an integument...
Horizontal transfer of a eukaryotic plastid-targeted protein gene to cyanobacteria.(Research article)(Clinical report)
Magazine article from: BMC Biology; 6/20/2007; ; 700+ words ; ...emerge from this data is the importance of horizontal gene transfer in genomic evolution [1]. Cases of prokaryote to prokaryote and prokaryote to eukaryote transfers are manifold, and their importance has dominated this debate [2, 3, 4...
Studies in the area of polar research reported from Polytechnic University.
Newspaper article from: Ecology, Environment & Conservation; 3/27/2009; 700+ words ; ...sea bottom during sea ice melting. Prokaryote abundance (up to 1.3 x 10(9) cells...the bottom sea ice. Despite this, prokaryote C production values were very low...degraded organic C was not channelled into prokaryote biomass. In the platelet ice, we found...
Current taxonomy in classroom instruction: how to teach the new understanding of higher-level taxonomy.
Magazine article from: The Science Teacher; 10/1/2007; ; 700+ words ; ...are often combined with the concept of prokaryote (cells with no nucleus) versus eukaryote...today. [FIGURE 1B OMITTED] The term prokaryote was coined by Chatton (1938), who...Stanier and van Neil. They defined the prokaryote as an organism with no nucleus or mitosis...
A complex and punctate distribution of three eukaryotic genes derived by lateral gene transfer.(Research article)(Clinical report)
Magazine article from: BMC Evolutionary Biology; 6/11/2007; ; 700+ words ; ...although there is still controversy about how common prokaryote-to-prokaryote gene transfer is, and what long term effects...12]. Nevertheless, convincing examples of prokaryote-to-eukaryote gene transfers have been described...
New nematode research has been reported by scientists at Massachusetts General Hospital.
Newspaper article from: Biotech Week; 12/10/2008; 700+ words ; ...to a study from the United States, "Prokaryote-eukaryote interactions are ubiquitous...clinically troublesome pathogens, the prokaryote, Acinetobacter baumannii, and the...Sciences of the United States of America (Prokaryote-eukaryote interactions identified...
New life sciences research from University Federal do Rio of Janeiro described.(Report)
Newspaper article from: Obesity, Fitness & Wellness Week; 12/20/2008; 700+ words ; ...granules in the many-celled magnetotactic prokaryote, 'Candidatus Magnetoglobus multicellularis...reported in a magnetotactic multicellular prokaryote named 'Candidatus Magnetoglobus multicellularis...granules in the many-celled magnetotactic prokaryote, 'Candidatus Magnetoglobus multicellularis...