词汇 | prokaryote |
释义 | prokaryote noun[ C ] biology specialized(alsoprocaryote)uk /prəʊˈkær.i.əʊt/ us /proʊˈker.i.oʊt/ a type of organism that has only one cell and does not have a nucleus(= central part), for example a bacterium: 原核生物 The eukaryotic cell is much larger and more efficient than the procaryote, carrying more genetic material.真核细胞比原核细胞大得多,效率更高,携带更多遗传物质。 All the contents of the cells of prokaryote organisms (which lack a cell nucleus) are contained within the cytoplasm.原核生物(无细胞核的)细胞内所含物质都在细胞质中。 Compare eukaryote The term prokaryote is Greek for "preliminary cell". Some scientists suggest that the procaryote is a degenerate eukaryote, one that has lost its unique features. Consider first a single-cell organism, a prokaryote. Animal & plant biology - general words abiotic anatomic anatomical anatomically correct anti-Darwinian biologist biophysics Darwinist entomological entomologist entomology eukaryote experiment station naturalist organically overstimulate overstimulated overstimulation photosynthetically survival of the fittest You can also find related words, phrases, and synonyms in the topics: Cells Examples of prokaryoteprokaryote But it is impossible to explain how prokaryotes cells evolved into eukaryotic cells (without creating intermediary organisms out of thin air). The molecule is ubiquitous - it occurs in prokaryotes and eukaryotes, and also in the genomes of mitochondria and chloroplasts. Interestingly, high amino acid homologies were observed only to genes isolated from prokaryotes. Cyclophilins have been isolated from a wide variety of eukaryotes and prokaryotes. Consistent with this prediction is the fact that at present no senescing prokaryote species are known. However, a greater need for fixed nitrogen would have imposed constraints on the rate of cyanobacterial proliferation - constraints that other prokaryotes would not have experienced. Its primary structure is highly conserved from prokaryotes and archaebacteria to eukaryotes. Biofilms may be considered as an ancestral selective event used by prokaryotes to adapt themselves to the environment. In this study we estimated divergence times of the major groups of prokaryotes with shared proteins from the complete genomes and proteomes of 73 species. The discoidin domain family revisited: new members from prokaryotes and a homology-based fold prediction. On the origin of cells : a hypothesis for the evolutionary transformation from abiotic geochemistry to chemoauthotrophic prokaryotes, and from prokaryotes to nucleated cells. On the origins of cells : a hypothesis for the evolutionary transitions from abiotic geochemistry to chemoautotrophic prokaryotes, and from prokaryotes to nucleated cells. They have been identified in prokaryotes and eukaryotes. On the origin of cells : a hypothesis for the evolutionary transitions from abiotic geochemistry to chemoautotrophic prokaryotes, and from prokaryotes to nucleated cells. On the origin of cells : a hypothesis for the evolutionary transitions from abiotic geochemistry to chemoautotrophic prokaryotes to nucleated cells. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
随便看 |
|
反思网英语在线翻译词典收录了377474条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。