An organism composed of a prokaryotic cell, such as a bacterium or a blue-green alga.
organisms that do not contain a nucleus. Bacteria are prokaryotes.
Class of organisms, including the eubacteria and archaebacteria, that lack a true membrane-limited nucleus and other organelles.
A cell lacking a membrane-bound nucleus; a bacterium or cyanobacterium.
In the bacteria and blue-green algae (cyanobacteria), the chromosomal material is not bound by a membrane and no nucleus is present. Organelles are also absent from the cytoplasm.
an organism that lacks a membrane enclosed nucleus
An organism lacking a true nucleus, such as a bacterium or a blue-green alga.
This relates to organisms whose basic cell structure is radically different from the cells within our bodies. Most prokaryotes are single-celled organisms such as bacteria and archeobacteria, and may be gathered together into the Kingdom Prokaryota. The major difference between prokaryotes and eukaryotes is that the prokaryotes have their genetic material 'naked' in the cell, with no nuclear membrane surrounding it. This means that their DNA is more prone to damage than eukaryotic cells and so is generally much smaller than a eukaryotic cell of the same size - hence the organisms themselves tend to be simpler both in structure and operation.
(pronounced pro-CARRY-oat) bacterium, also called moneran, without nucleus
A single-celled organism that completely lacks membrane-bound intracellular organelles such as a nucleus or mitochondria; prokaryotes possess only a single circular strand of DNA. Prokaryotes are simpler than eukaryotes and arose earlier in evolutionary history. All bacteria are prokaryotes. Taxonomists group all prokaryotes into the kingdom Monera.
A single- cell organism that has no distinct nucleus.
cellular microorganism in which the chromosomes are not isolated from the cytoplasm by a membrane (nucleus-free cells).
A cell that contains a primitive nucleus where the DNA-containing region lacks a definitive membrane; e.g. bacteria and cyanobacteria.
An organism lacking a membrane-bound, discrete nucleus and other subcellular compartments. Such as bacteria.
Organism lacking a nucleus and other organelles. Prokaryotes include bacteria, and are usually single-celled.
a unicellular organism having cells lacking membrane-bound nuclei; bacteria are the prime example but also included are blue-green algae and actinomycetes and mycoplasma
an organism in which the genetic material is not separated from the cytoplasm by a conventional lipid bilayer membrane
a unicellular organism that does not have a membrane-bounded nucleus
A single-celled organism that does not contain a visible nucleus.
simple organism without a defined nucleus or internal membranes
cells without a defined nucleus. Bacteria cells are prokaryotic cells.
Organisms, namely bacteria and cyanobacteria (formerly known as blue-green algae), characterized by the possession of a simple naked DNA chromosome, occasionally two such chromosomes, usually of circular structure, without a nuclear membrane and possessing a very small range of organelles, generally only a plasma membrane and ribosomes.
a single-celled organism whose cell lacks a nucleus and internal cellular bodies (organelles). See eukaryote.
The class of living things, including all bacteria, that do not have a nucleus in their cell.
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 in chromosomes bounded by a nuclear membrane. ( Oxford Dictionary of Zoology 2003).
an organism which does not have a defined nucleus nor other cell organelles, for example all bacteria
A prokaryote is a microscopic single-celled organism, including the bacteria and cyanobacteria, that has neither a distinct nucleus with a membrane nor other specialized organelles. Compare with eukaryote.
a cell whose genetic material is organized throughout the cell.
A primarily unicellular organism in which the cells lack a true nucleus.
An organism lacking a membrane-bound, structurally discrete nucleus and other subcellular compartments. Bacteria are prokaryotes.
An organism having a cell without a distinct nucleus. Bacteria and blue-green algae are prokaryotes.
Type of cell that lacks a membrane-bound nucleus and has no membrane organelles; a bacterium. Prokaryotes are more primitive than eukaryotes. Cells lacking membrane-bound organelles and having a single circular chromosome, and ribosomes surrounded by a cell membrane. Prokaryotes were the first forms of life on earth, evolving over 3.5 billion years ago.
An organism (e.g. bacterium, virus, blue-green alga) whose DNA is not enclosed within a nuclear membrane. Cf. Eukaryote.
a name previously applied to all microorganisms that lacked a nuclear membrane bu now replaced by Archaea and Bacteria; a plasma membrane surrounded by a cell envelope, enclosing an interior that includes DNA, ribosomes, proteins, and other cell components. Compare with eukaryote.
An organism built of one or more procaryotic cells; mainly bacteria and cyanobacteria. Most procaryotes are single-celled organisms, or consist of simple filaments or sheeth of cells. The oldest fossils represent prokaryotes. Eukaryotic cells evolved from procaryotes.
Organisms lacking a true nucleus.
microorganisms that lack a membrane-bound nucleus containing chromosomes; other organelles are also absent
organism whose DNA is not contained in a nucleus.
an organism that lacks an organized nucleus, and has its DNA mostly in a single molecule; a bacterium. Return to text.
An organism whose cells do not contain nuclei. Only the bacteria are prokaryotes.
an organism with cells which do not contain a distinct nucleus. Page up
In prokaryotes, chromosomal DNA is circular, and the entire genome is carried on one chromosome. (IOGlossary) Procarioto 1961 - F. Jacob e J. Monod decifram os mecanismos de regulação gênica em procariotos. (POUniverRS)
A cell or organism without a membrane-bound nucleus. Bacteria are prokaryotes.
A cell or organism lacking a unit membrane-bound (true) nucleus and other organelles, usually having its DNA in a single circular molecule. Includes bacteria and blue-green algae.
Cell or organism lacking a membrane-bound, structurally discrete nucleus and other sub-cellular compartments. Bacteria are prokaryotes.
A cell without a true nucleus.
An organism composed of a prokaryotic cell, such as bacteria and blue-green algae.
A member of a large group of organisms (including bacteria and blue-green algae) that lack a true nucleus, nuclear membrane, and cannot undergo meiosis. Instead, they reproduce by cell fission —cells split into two identical daughter cells and become a new, independent organism.
Unicellular organism, characterised by the absence of a membrane-enclosed nucleus. Prokaryotes include bacteria, blue-green algae and mycoplasmas. RT eukaryote. After Nagel et al. (eds), 1991
An organism whose DNA is not enclosed in a separate organelle.
Organisms whose cells have their genetic material in the form of loose strands of DNA found in the cytoplasm. They also do not have a membrane-bound nucleus and have few specialized structures located within their cell boundary.
A cell without a distinct nucleus. Bacteria and some other simple organisms are prokaryotic.
Prokaryotic (pro-KAR-ee-ot-ic) (from Old Greek pro- before + karyon nut or kernel, referring to the cell nucleus, + suffix -otos, pl. -otes; also spelled "procaryotes") are organisms without a cell nucleus (= karyon), or indeed any other membrane-bound organelles, in most cases unicellular (in rare cases, multicellular).