from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An organism of the kingdom Monera (or Prokaryotae), comprising the bacteria and cyanobacteria, characterized by the absence of a distinct, membrane-bound nucleus or membrane-bound organelles, and by DNA that is not organized into chromosomes. Also called moneran.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An organism whose cell (or cells) are characterized by the absence of a nucleus or any other membrane-bound organelles.
- n. In the two-empire system of biological taxonomy, an organism of the kingdom Prokaryotae (now superseded).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. 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
Tara Smith has a good post about this, including a persuasive argument for scouring the word "prokaryote" from your vocabulary.
Prominent biologist calls 'prokaryote' outdated term. (p. 5)
"The goal of creating the Human Oral Microbiome Database (HOMD) is to provide the scientific community with comprehensive information on the approximately 600 prokaryote species that are present in the human oral cavity"
Similar factors are said to describe prokaryote productivity.
The main difference between them is that a eukaryote has a nucleus, which contains its DNA, while a prokaryote does not have a nucleus, but instead its DNA is free-floating in the cell.
Proceedings of the National Academy of Sciences, prokaryote proteins aggregation of antenna antifreeze bicoid
They range from the simple to the complex, have very different life cycles, and represent three different fundamental domains of life: eukaryote, virus, and prokaryote.
There is or was enough lateral gene transfer so that a tree is not a complete model of prokaryote relations.
IOW the prokaryote caulk gun ribosome is a bit different than the eukaryote in the way it processes redundant codons.
In the essay mentioned, Norman Pace discusses the eukaryote/prokaryote dichotomy.