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Related to eucaryote: procaryote


an organism of the Eucaryotae, whose cells (eukaryotic cells) have a true nucleus that is bounded by a nuclear membrane, contains the chromosomes, and divides by mitosis. Eukaryotic cells also contain membrane-bound organelles, such as mitochondria, chloroplasts, lysosomes, and the Golgi apparatus. Plants and animals, protozoa, fungi, and algae (except blue-green algae) are eukaryotes. Other organisms (the bacteria) are prokaryotes.


1. A cell containing a membrane-bound nucleus with chromosomes of DNA and proteins, generally large (10-100 mcm), with cell division involving a form of mitosis in which mitotic spindles (or some microtubule arrangement) are involved; mitochondria are present, and, in photosynthetic species, plastids are found; undulipodia (cilia or flagella) are of the complex 9+2 organization of microtubules and various proteins. Possession of an eukaryote type of cell characterizes the four kingdoms above the Monera or prokaryote level of complexity: Protoctista, Fungi, Plantae, and Animalia, combined into the superkingdom Eukaryotae.
2. Common name for members of the Eukaryotae.
Synonym(s): eucaryote
[eu- + G. karyon, kernel, nut]


(yo͞o-kăr′ē-ōt′, -ē-ət)
Variant of eukaryote.

eucaryote, eucaryotic

See eukaryote.


References in periodicals archive ?
We eucaryotes, we large animals, we brainy animals, are a recent wart on the face of a biosphere which is still fundamentally, and predominantly, procaryotic.
Humans, earthworms, snails and mushrooms have much in common, because animals, plants and the 'higher protista' (fungi, yeasts and green algae) are all made of eucaryotes cells which have a nucleus containing, amongst other things, the DNA which determines their genetic constitution.