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Eukaryote

Definition

noun, plural: eukaryotes

Any of the single-celled or multicellular organisms whose cell contains a distinct, membrane-bound nucleus.


Supplement

Organisms such as animals, plants, fungi, and protists are examples of eukaryotes because their cells are organized into compartmentalized structures called organelles, the nucleus in particular. The presence of a distinct nucleus encased within membranes differentiates the eukaryotes from the prokaryotes. The eukaryotes are also known for having cytoplasmic organelles apart from nucleus, such as mitochondria, chloroplasts and Golgi bodies. Eukaryotes often have unique flagella made of microtubules in a 9+2 arrangement.


Word origin: Greek eu- (good-, well-, true) + káry(on) (nut, kernel).

Related forms: eukaryotic (adjective).

Compare: prokaryote.


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Re:

... you need some proofs. So far abiogenesis looks better then God. All of the DATA that supports "tree of life" - first prokaryote, than eukaryote that somehow swallowed prokaryote giving us mitochondria and giving plants chloroplasts can be interpreted in the OPPOSITE direction. If you ...

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by Cat
Thu Oct 11, 2012 2:11 am
 
Forum: Evolution
Topic: Are evolution and creationism mutually exclusive???
Replies: 23
Views: 3232

A question I'm finding hard to answer (recombinant protein)

... enzymes that do this for the protein in the original species are also present in the expression system, even if the expression system is another eukaryote. For prokaryotes (bacteria), this is even more unlikely since they very rarely have such modifications.

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by AstraSequi
Mon Apr 30, 2012 5:39 pm
 
Forum: Cell Biology
Topic: A question I'm finding hard to answer (recombinant protein)
Replies: 9
Views: 3383

Re:

... it is hypothesized mitochondria did not evolve inside eukaryotic cells but were consumed and incorporated into the cellular mechanics of the eukaryote, this is why they have their own DNA, because they were once individual organisms separate from other cells.

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by cyanodave
Fri Mar 30, 2012 6:40 pm
 
Forum: Molecular Biology
Topic: Life
Replies: 17
Views: 7467

Is Cyanobacteria an algae or a prokaryote (bacteria)??

... states that algae (not including cyanobacteria) contain chloroplasts which did not evolve within the algae itself but were rather consumed by a eukaryote (today's algae) in the form of cyanobacteria, in the same manner many animal cells have come to contain mitochondria. Alga are defined as ...

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by cyanodave
Tue Mar 27, 2012 3:15 am
 
Forum: Microbiology
Topic: Is Cyanobacteria an algae or a prokaryote (bacteria)??
Replies: 5
Views: 2586

what is the difference between promoter and enhancer

... binding and regulatory sites necessary for transcription to happen. They usually have sequences called consensus sequence like TATA box in eukaryote or prinbow box in prokaryotes, which initiates the transcription by unwinding the DNA. Apart from the basal promoter, there are unique upstream ...

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by genetherapy
Wed Mar 14, 2012 4:22 pm
 
Forum: Molecular Biology
Topic: what is the difference between promoter and enhancer
Replies: 3
Views: 1559
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