Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of various single-celled or multicellular organisms of the domain Eukaryota, characterized by cells that contain a distinct membrane-bound nucleus and by the occurrence of DNA transcription inside the nucleus and protein synthesis in the cytoplasm, in contrast to prokaryotes.
from the GNU version of the Collaborative International Dictionary of English.
- noun an organism with "good" or membrane-bound nuclei having multiple chromosomes; eucaryotes also have other membrane-bound organelles such as mitochondria or chloroplasts, within the cytoplasm enclosed by the outer membrane. Such cells are characteristic of all life forms except primitive microorganisms such as bacteria and blue-green algae. Contrasted with
prokaryote .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Any of the single-celled or
multicellular organisms , of the taxonomic domainEukaryota , whosecells contain at least one distinctnucleus .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun an organism with cells characteristic of all life forms except primitive microorganisms such as bacteria; i.e. an organism with `good' or membrane-bound nuclei in its cells
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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The word eukaryote comes from the Greek for true nucleus.
eukaryote 2002
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Am I not right when I say that the simplest eukaryote is a heck of a lot more complex than the archaea is?
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Am I not right when I say that the simplest eukaryote is a heck of a lot more complex than the archaea is?
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Guts: All the pieces needed for tyrosine kinase signaling came together in a single celled eukaryote.
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Then, for any extant eukaryote, there exists, not one, but n possible cellular ancestors at the Darwinian threshold (when Eukarya first evolved).
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His theory follows years of analysis of the Archaea and a comparison with bacterial and eukaryote cell lines.
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Given that these lines of ancestry do not converge to a point, but pass through an interval of indeterminate width into a communal state, the set of ancestors of any eukaryote will not include a universally shared organismal member (usually referred to the literature as the last eukaryotic common ancestor, LECA).
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All the pieces needed for tyrosine kinase signaling came together in a single celled eukaryote.
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Paul Nelson: Then, for any extant eukaryote, there exists, not one, but n possible cellular ancestors at the Darwinian threshold (when Eukarya first evolved).
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Given that these lines of ancestry do not converge to a point, but pass through an interval of indeterminate width into a communal state, the set of ancestors of any eukaryote will not include a universally shared organismal member (usually referred to the literature as the last eukaryotic common ancestor, LECA).
artoparts commented on the word eukaryote
See: prokaryote - less recommended though.
September 30, 2008