| 释义 |
eukaryote Biol.|juːˈkærɪət|
Also -caryote.
[a. F. eucaryote (É. Chatton 1925, in Ann. des Sci. Nat.: Zool. VIII. 76), f. as prec. + Gr. -ώτ-ης.]
A eukaryotic organism. Opp. prokaryote.
1961in Webster. 1963,1967[see prokaryote]. 1969New Scientist 14 Aug. 327/2 The oldest rocks in which eucaryotic fossils are known are about 1.2 to 1.4 aeons old, although eucaryotes may have made their debut before this. 1977Sci. Amer. July 28/3 The paleontological record suggests that prokaryotes existed on the earth for a billion or more years before the more complex eukaryotes arrived on the scene. 1983Nature 21 July 211/1 Many sexually reproducing species of lower eukaryotes are not differentiated into males and females. 1984J. W. Kimball Cell Biol. (ed. 3) iii. 72/1 (caption) Electron micrograph..of a blue-green alga. Although internal membranes are found in this prokaryote, these are not organized into the membrane-bounded organelles characteristic of eukaryotes. |