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Each bactericidal agent has a different mechanism of action. For example: Alcohol denatures proteins necessary for function and the lipids in the plasma membrane dissolve into the alcohol. "Iodine can penetrate the cell wall of micro-organisms quickly, and the lethal effects are believed to result from disruption of protein and nucleic acid structure and ...


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It depends on the temperature of the environment as well. In the heat of summer and in a watery environment, I can verify through unfortunate personal reference that stuff can decompose very quickly. I honestly didn't look at the image, but judging by your description it can't have been there a year. There would be nothing left. Hungry bacteria and ...


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The genetic code of the tree of life is actively studied. So far, all the living beings have conformed to LUCA model. They are all RNA and DNA dependent, and no other life forms are known. All the RNA and DNA life forms share a tree like inheritance pattern with more simple organisms. Sometimes there is doubt about wether mushrooms are more closely related ...


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It is quite likely (but impossible to study) that the first stages of life originated more than once. However, the evidence that all currently existing life originated from the same population is very strong. On the most basic level, many of the basic building blocks of life, RNA, DNA, amino acids are chiral, which means they come in multiple forms, but ...


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They're effectively immortal, albeit in a Phoenix-rising-from-the-ashes sort of way. In general, a bacterial cell will divide as soon as it's biochemically able to do so, leaving behind two daughter cells. Neither daughter cell is actually the same as the mother cell, so in one sense the mother cell will have "died". On the other hand, the daughter cells ...



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