commensalism,and mutualism.The first and the third can be key factors in the structure of a biological community;that is, all the populations of organisms living together and potentially interacting
towards a natural system of organisms: proposal for the domains archaea, bacteria and eucarya: c.r. woese, o. kandler and m.l. wheelis proc. natl acad. sci... - Trends in Genetics 被引量: 957发表: 1990年 The origin of the eukaryotic cell Molecular sequence data are beginning to provi...
Therefore, to produce the different dynamics, the models need not undergo any change in structure, such as might occur in different systems or groups of organisms. Here we show that field populations of a predator, the zooplanktonic herbivore Daphnia and its algal prey exhibit three qualitatively...
Previous phylogenetic analyses of these enzymes mainly focused on deep phylogenies [23, 24] or the evolution of alternative pathways in different organisms, which displays high variability in bacteria [25, 26]. This central metabolic pathway is highly conserved and ancient; it is therefore possible ...
Suitable food organisms were Tetraselmis tetrathele and Chlorella ellipsoidea for the three types rotifer. Tetraselmis tetrathele was more adequate for the ultra small and large type rotifer as live food. However, Chlorella ellipsoidea showed better dietary value for the small type rotifer. 展开 ...
3a). Although plants are autotrophic organisms, they seemingly grow mixotrophically here, take up supplemented sugar, convert it via carbohydrate metabolism, which impacts in turn amino acid and nucleoside metabolism and exudation. Fig. 3: Metabolites distinct in B. distachyon exudates from different ...
The morphological and biochemical characteristics of the isolates permitted their differentiation into three distinct species: Treponema denticola, T. macrodentium, and T. oralis (proposed new species). These species could be differentiated as follows. Organisms of the T. denticola type had a "2-4-...
因此选organisms有机体,生物体。 8)【答案】A 【解析】此句意思是:人类的语言能力是与生俱来的,但语言本身也在逐渐发展,所以这种能力应该是潜在的。potential潜力;performance履行;preference偏爱;passion激情。 9)【答案】A【解析】此句句义是:语言本身作为童年时期大脑生长的一种功能,其发展是缓慢的。as (作为,...
In addition, soil physicochemical properties make the partitioning of chemical activities of Pb highly uneven, which leads to a great difference in the Pb absorption efficiency of organisms6. Nowadays, there are many remediation technologies for heavy metals contaminated soil. Conventional techniques for...
cancer drug paclitaxel (trade name Taxol) mainly exists in the bark ofTaxustrees17. Additionally, some secondary metabolites have apparently undergone convergent evolution in distantly-related plant lineages18. Driven by genetic variations, evolution occurs upon selection on traits that benefit organisms ...