Even if the well-known endosymbiotic theory is right, and once free-living single-celled organisms evolved to become organelles within larger cells, much remains unexplained about how, exactly, ...

Mitochondria and chloroplasts are essential eukaryotic organelles of endosymbiotic origin. Dynamic cellular machineries divide these organelles. The mechanisms by which mitochondria and chloroplasts ...

1.8 billion years ago, a cell ate another cell, but it didn't digest it, and without that happening, we would not exist. This week we explore the origins of eukaryotic cells and ask the question, "Are ...

The evolution of intracellular organelles through endosymbiosis was a turning point in the history of life on Earth. Subsequent loss of endosymbiotic organelles, or plastids, has only been ...

Nancy Moran enjoys a treatise on symbiosis — the intimate association of species that transformed life and Earth. Cells originated, became complex and expanded their capabilities: events that, as ...

At least one in every two intensive care patient displays Systematic Inflammatory Response Syndrome (SIRS). This clinical picture resembles sepsis but without any identifiable bacterial or fungal ...

Harrison, F. W., Gardiner, S. L., Rützler, Klaus, and Fisher, C. R. 1994. "On the occurrence of endosymbiotic bacteria in a new species of sponge from hydrocarbon seep communities in the Gulf of ...

A group of scientists showed for the first time that in red algae, an enzyme that is usually involved in cell division also plays a role in replication of mitochondria -- a crucial cell organelle.