http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. All single-celled organisms are not alike. Or are they? A Northwestern University study has found a surprising similarity among four quite different organisms. The simplest organism, a bacterium called H. pylori, uses the same number of biochemical reactions (around 300) as yeast, the largest, most complex organism of the group, when optimizing growth. http://www.physorg.com/news147696605.html Biology Fri, 05 Dec 2008 10:50:05 EST news147696605