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美宇航局发现新品种地球微生物


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分类: 科技新闻



美国宇航局今天表示,在地球上发现全新的微生物,它能利用砷进行新陈代谢,砷含有剧毒。据《纽约时报》报道称,科学家们表示,他们已经培训出一种细菌,该细菌能依靠砷维持生长,代替磷,一直以来磷被认为是生命必须的六种元素之一(其它五种是碳、氧、氦、氢和硫)。该发现推导出新的可能,即有机体可以在宇宙中任何地方存在(是否意味着宇宙生物?),甚至是在地球上利用生物化学能生长,这是过去未曾发现的。

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