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第6章 微生物(1 / 1)

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Clara教授话音刚落,教室里又传出一个答案:“螨虫。”

说话的是一个印度女生,说完她自己就笑了。

班上不少同学撸一把手臂上皱起的鸡皮疙瘩,印度女生给出的答案听起来似乎有几分道理,但是这个答案真的是太!恶!心!了!

螨虫生活在动物皮肤表层,靠吃动物坏死的皮肤存活。

我们每天都有皮肤死去,要是没有螨虫帮我们把这些死皮吃掉,只要两天时间我们脸上就能堆出好几层厚皮。

可是螨虫会趁我们不注意的时候拼命下蛋,而且螨虫从生到死都留在我们皮肤上面。螨虫数量一多,死掉的螨虫尸体就会堆积在毛孔之类的地方,引起过敏,让人痒不欲生!

有了螨虫这个答案,大家的脑洞稍微被扩开一些。又一个更恶心的答案从后排传来:“大肠杆菌!”

所有人瞬间回头,大家都想看看是什么样的人才能够给出大肠杆菌这样抽象的答案。

大肠杆菌寄生在动物肠道中,这种微生物与动物的共生关系可以追溯到人类这个物种出现以前。

如果将大肠杆菌列入备选答案之中,那么教授所说的“祖先”就不是人类的祖先,而是所有动物甚至是植物的祖先。那将是一个极其古老的故事,古老到只有古生物学家才会涉足那个领域。

教授也跟着众人将视线跳到后排,她脸上露出欣慰:“我终于听到有同学提到单细胞生物,而且还是原核生物。大家可以把时间再往前推,真核生物第一个驯化的原核生物是什么?”

时间还要往前推?!

吴穹感到一阵木然,他转头看一眼葛丰,只见葛丰脸上同样挂上了不可置信的表情。

“这教授疯了!单细胞生物没办法变成化石,就算是考古队也挖不出这个答案吧!”葛丰小声对吴穹嘀咕一句,与此同时教室里也传出稀稀疏疏的交流声。

一种非常迷茫的困惑萦绕在吴穹心头,比雾里看花还要模糊,比水中捞月还要虚无。

第一节课教授抛出的第一个问题就是原始生命的演化过程,这种飞一样的进度是在劝退吗?

吴琼在手心里捏把汗,渐渐的,教室里的交流声越来越小,最后只剩下令人窒息的安静,安静等待谁能够给出教授想要的答案。

这时候,角落里一个微弱的声音小声问了一句:“是线粒体吗?”

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