| 单词 | eukaryote |
| 释义 | eukaryote (once / 492472 pages) n A eukaryote is an organism whose cells contain a nucleus within a membrane. The genetic material and information of a eukaryote is contained within this nucleus. Eukaryotes vary from single-celled organisms to complex multicellular animals and plants. In fact, most living things are eukaryotes, made up of cells with distinct nuclei and chromosomes that contain their DNA. The only organisms that aren't eukaryotes are bacteria and archaea, known as prokaryotes. The word eukaryote comes from the Greek eu, "well," and karyon, "nut or kernel," which is a common scientific word-forming element that's used to talk about the nuclei of cells. WORD FAMILYeukaryote: eukaryotes USAGE EXAMPLESSince then, large quantities of membrane vesicles have been found, particularly in ocean water, and produced by eukaryotes and bacteria. Nature(Oct 25, 2016) Today, the cells that make up all life on Earth are clustered into three broad groups: bacteria, archaea, and eukaryotes. Science Magazine(Jul 25, 2016) The kingdoms are those of the bacteria, the archaea and the eukaryotes. New York Times(Jul 25, 2016) n 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 Syn|Ant|Hyper eucaryote procaryote, prokaryote 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 being, organism a living thing that has (or can develop) the ability to act or function independently |
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