Small Things Considered
A blog for sharing appreciation of the width and depth of microbes and microbial activities on this planet.
Small Things Considered's Latest Posts
by Elio Original Legend: Transverse and longitudinal section of Bacillus megatherium (as spelled then. Now it’s megaterium) approximately 0.1 micron thick. X 25,000; 50 KV. Note similar density and detail in the two cells. It’s hard to tell for sure, but it seems to have been a pair of investigators at the University of Southern California, Richard Baker and Daniel...
by Jordan Kesner, Bryan Hancock, and Nicole Nalbandian The oceans of our world harbor an incredible diversity of life, the vast majority of which has yet to be observed or characterized. This is part of what makes the study of marine biology so exciting; there is, in essence, an endless sea of new and exciting underwater discoveries to be made. When a biologist thinks of the creatures that inhabit our oceans, one of the prominent examples that often comes to mind is the tubeworm, a metazoan […]
by Elio Figure 1. An example of syntrophy. Here, benzoate degradation is carried out by a model syntrophic consortium. Dashed blues lines indicate additional sources of cell carbon for the methanogens. Source. Syntrophy or “eating together” is a kind of symbiosis widespread in biology and of great importance for key biochemical transactions on this planet. Indeed, the cycling of carbon...
Hosts: Vincent Racaniello, Elio Schaechter, Michael Schmidt and Michele Swanson. Vincent, Elio, Michael, and Michele discuss the use of bacteria to build a genetic sensor for heavy metals, and how host sugars help enteric pathogens to expand after antibiotic treatment. Right click to download TWiM #76 (48 MB .mp3, 67 minutes). Subscribe to TWiM (free) on iTunes, Zune Marketplace, via...
by Daniel P. Haeusser How did Eukaryotes Evolve from Prokaryotes? Figure 1. The mysterious root of the eukaryotic origin. Evolution of prokaryotes into eukaryotes undoubtedly involved mitochondrial acquisition, but the full details of the story are far from certain. Source. One of the most exciting and enduring obscurities of biology lies in the early stages of the evolution of “our”...
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