is a proposed superphylum belonging to the domain Archaea that contain eukaryotic signature proteins. It appears that the eukaryotes, the domain that contains...

occur in other organisms. Some publications suggest that archaeal or eukaryotic lipid remains are present in shales dating from 2.7 billion years ago...

ancestor that was a single-celled eukaryotic species. Sexual reproduction is widespread in eukaryotes, though a few eukaryotic species have secondarily lost...

interest to biologists because the three known varieties of flagella – (eukaryotic, bacterial, and archaeal) each represent a sophisticated cellular structure...

and repressors, eukaryotic genes are said to be 'default off', whereas prokaryotic genes are 'default on'. The core promoter of eukaryotic genes typically...

ancestors of eukaryotic cells, which were themselves possibly related to the Archaea. This involved the engulfment by proto-eukaryotic cells of alphaproteobacterial...

Ceramides are found in high concentrations within the cell membrane of eukaryotic cells, since they are component lipids that make up sphingomyelin, one...

of genes for homologous recombination in protists—a diverse group of eukaryotic microorganisms—has been interpreted as evidence that homologous recombination...

Trichomonas vaginalis is not known to undergo meiosis, a key stage of the eukaryotic sexual cycle. However, when Malik et al. examined Trichomonas vaginalis...

cells and other eukaryotic organisms. The arrangement of cellulose and other polysaccharides in a plant cell wall Cell types: eukaryotic cell (left) and...