Cells lacking a membrane-bound nucleus and membrane-bound organelles; a bacterium or cyanobacterium.
Organisms, namely bacteria and cyanobacteria, characterised 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.
cell A cell with no nuclear membrane, hence, no separate nucleus.
A cellular organism (such as a bacterium or a blue-green alga) that does not have a distinct nucleus.
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 term that describes cells whose internal construction and activities are relatively simple. Such cells lack organells, chromosomes, and other complex internal units that are common in the eucaryouts (see above).
lacking the structural complexity and defined nucleus found in eucaryotes.
cell without a nucleus, has a nuclear area.
Literally "before the nucleus", the term applies to all bacteria and archaea. Prokaryotic cells have no internal membranes or cytoskeleton. Their DNA is circular, not linear.
organisms (bacteria) lack nuclei.
Cells that do not have a membrane-bounded nucleus or membrane-bounded organelles.
Referring to a cell with no nucleus (e.g., a bacterium).