Word: bacterias
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...years, no question has stirred the imagination of more evolutionary experts, spawned more novel theories or spurred more far-flung expeditions. Life has occupied the planet for nearly 4 billion of its 4.5 billion years. But until about 600 million years ago, there were no organisms more complex than bacteria, multicelled algae and single-celled plankton. The first hint of biological ferment was a plethora of mysterious palm-shape, frondlike creatures that vanished as inexplicably as they appeared. Then, 543 million years ago, in the early Cambrian, within the span of no more than 10 million years, creatures with teeth...
...fossils. Under bright lights and powerful microscopes, they coaxed fine-grain anatomical detail from the shale's stony secrets: the remains of small but substantial animals that were overtaken by a roaring underwater mudslide 515 million years ago and swept into water so deep and oxygen-free that the bacteria that should have decayed their tissues couldn't survive. Preserved were not just the hard-shelled creatures familiar to Darwin and his contemporaries but also the fossilized remains of soft-bodied beasts like Aysheaia and Ottoia. More astonishing still were remnants of delicate interior structures, like Ottoia's gut with...
...divide their bodies into cells, believes Seilacher, but into compartments so plumped with protoplasm that they resembled air mattresses. They appear to have had no predators, says Seilacher, and led a placid existence on the ocean floor, absorbing nutrients from seawater or manufacturing them with the help of symbiotic bacteria...
...fellow at Harvard, Ptashne rose to fame after isolating the repressor of lambda phage virus. The lambda virus is able to remain dormant in E. coli bacteria because its repressor binds to the viral DNA, preventing the expression of the genes necessary for viral replication...
...Republican initiatives which was defeated was an attempt to bar FDA meat inspectors from scientifically inspecting meat for E. Coli and other bacteria, viruses and vermin. Until now, FDA inspectors were only permitted to inspect meat visually. Each year, thousands of people die from eating contaminated meat, and many more become ill. Yet the Republicans sided with the meat industry, which see the new regulations only as a serious meat to profits...