Gaseous fuels are in three major groups, namely natural gases, liquefied petroleum gases and manufactured gases. 气体燃料有三类:即天然气、液化石油气和人工煤气。 www.infopetro.com.cn 10. plants are, with insects, one of the few major groups of organisms to evolve entriely on land. 植物和昆虫...
Accordingly, the mode of sequence variation of the D3 domain suggests this region of the molecule may encode elementary functions of rRNA which could have significantly diversified during the evolution of the major groups of organisms.Bernard MICHOT...
HYPOTHETICAL PHYLOGENETIC RELATIONSHIPS BETWEEN EXTANT MAJOR GROUPS OF ORGANISMS - Comparative Biochemistry, Volume 5 - CHART IELSEVIERComparative Biochemistry
The origins of many major groups of organisms in the fossilrecordseem to lie shrouded in obscurity. Indeed, one of the most famous examples, theflowering plants, was called "an abominable mystery" by Darwin. Many modern groups appear abruptly, and their predecessors—if there are any—tend to...
Contribution of major groups of autotrophic organisms to primary production of water bodies. Water Resources, 2004, 31(1) : 92⁃102. DOI:10.1023 / B:WARE.0000013579.89883.55.Voulion, V.V. (2004). Contributions of major groups of autotrophic organisms to primary production of water bodies. ...
This time was also marked by changes in many other types of organisms. Overall, about 38 percent of the families of marine animals were lost, with percentages much higher in some groups Ammonoid mollusks went from being very diverse and abundant to being extinct. An extremely abundant set of...
Enzymes, the largest group of proteins, are biocatalysts with the critical task of lowering the activation energies of chemical reactions, thus speeding up biochemical reactions in living cells and organisms1,2,3. Diastase was the first enzyme discovered in 1833, and the discovery of other hydrolyt...
Protein sequences with similarities to Escherichia coli RecA were compared across the major kingdoms of eubacteria, archaebacteria, and eukaryotes. The archaeal sequences branch monophyletically and are most closely related to the eukaryotic paralogous Rad51 and Dmc1 groups. A multiple alignment of ...
For comparison, single plane confocal microscopy images of cells expressing an eYFP fusion protein of the nucleoporin NUP54/57 are shown. B) Available genomes of organisms that are representative for five of the six major groups of the eukaryotic kingdom were searched for proteins homologous to ...
In a coordinated distributed experiment spanning a wide range of actively dispersing organisms, from protozoa to vertebrates, we show that bottom-up control, that is resource limitation, consistently increased dispersal. While top-down control, that is predation risk, was an equally important dispersal...