Definitions for prokaryote
proʊˈkær iˌoʊt, -i ətproka·ry·ote

Princeton's WordNetRate this definition:0.0 / 0 votes

1. prokaryote, procaryotenoun

   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

WiktionaryRate this definition:0.0 / 0 votes

1. prokaryotenoun

   An organism characterized by the absence of a nucleus or any other membrane-bound organelles.

2. prokaryotenoun

   In the two-empire system of biological taxonomy, an organism of the kingdom Prokaryotae (now superseded).

3. Etymology: From pro- + κάρυον + -ote.

WikipediaRate this definition:0.0 / 0 votes

1. Prokaryote

   A prokaryote () is a single-celled organism that lacks a nucleus and other membrane-bound organelles. The word prokaryote comes from the Greek πρό (pro, 'before') and κάρυον (karyon, 'nut' or 'kernel'). In the two-empire system arising from the work of Édouard Chatton, prokaryotes were classified within the empire Prokaryota. But in the three-domain system, based upon molecular analysis, prokaryotes are divided into two domains: Bacteria (formerly Eubacteria) and Archaea (formerly Archaebacteria). Organisms with nuclei are placed in a third domain, Eukaryota. In biological evolution, prokaryotes are deemed to have arisen before eukaryotes. Besides the absence of a nucleus, prokaryotes also lack mitochondria, or most of the other membrane-bound organelles that characterize the eukaryotic cell. It was once thought that prokaryotic cellular components within the cytoplasm were unenclosed, except for an outer cell membrane, but bacterial microcompartments, which are thought to be simple organelles enclosed in protein shells, have been discovered, along with other prokaryotic organelles. While being unicellular, some prokaryotes, such as cyanobacteria, may form large colonies. Others, such as myxobacteria, have multicellular stages in their life cycles. Prokaryotes are asexual, reproducing without fusion of gametes, although horizontal gene transfer may take place. Molecular studies have provided insight into the evolution and interrelationships of the three domains of life. The division between prokaryotes and eukaryotes reflects the existence of two very different levels of cellular organization; only eukaryotic cells have an enveloped nucleus that contains its chromosomal DNA, and other characteristic membrane-bound organelles including mitochondria. Distinctive types of prokaryotes include extremophiles and methanogens; these are common in some extreme environments.

ChatGPTRate this definition:0.0 / 0 votes

1. prokaryote

   A prokaryote is a type of organism that is single-celled and lacks a nucleus or any other membrane-bound organelles. This category includes bacteria and archaea. They reproduce through binary fission and have a simplistic cellular structure relative to eukaryotes, which encompass all other life forms. Prokaryotes also have a unique method of DNA storage and use as their DNA is located in the cytoplasm within a region called the nucleoid.

WikidataRate this definition:5.0 / 1 vote

1. Prokaryote

   The prokaryotes are a group of organisms whose cells lack a membrane-bound nucleus. The organisms whose cells do have a nucleus are called eukaryotes. Most prokaryotes are unicellular organisms, although a few such as myxobacteria have multicellular stages in their life cycles or create large colonies like cyanobacteria. The word prokaryote comes from the Greek πρό- "before" and καρυόν "nut or kernel". Prokaryotes do not have a nucleus, mitochondria, or any other membrane-bound organelles. In other words, all their intracellular water-soluble components are located together in the same area enclosed by cell membrane, rather than separated in different cellular compartments. The division to prokaryotes and eukaryotes reflects two distinct levels of cellular organization rather than biological classification of species. Prokaryotes include two major classification domains: the bacteria and the archaea. Archaea were recognized as a domain of life in 1990. These organisms were originally thought to live only in inhospitable conditions such as extremes of temperature, pH, and radiation but have since been found in all types of habitats.

Matched Categories

1. • Organism

How to pronounce prokaryote?

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Numerology

1. Chaldean Numerology

   The numerical value of prokaryote in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of prokaryote in Pythagorean Numerology is: 9

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=prokaryote
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Prokaryote
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Prokaryote
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=prokaryote