细菌是怎么产生的

呵呵，要是我能回答你这个问题
我能拿nobel了，开个玩笑

其实细菌的起源问题和生命的起源问题一样，现今都无法给出合理的解释，而且也很难得到实验的验证
我所知的关于这方面的，可能就是miller在模拟条件下合成出了肽之类的有机物而已。目前离人工验证生命的起源还有非常长的路要走
但是我们不妨大胆假设一下，也许从无机物到有机物，再到具有初步与外界交换特征的有机物集合体，由此可能进化途径发生了分道扬镳，分别进化成了原核生物，真核生物和古细菌，并且在进化过程中，三者之间一定发生了遗传信息的交流，由此形成当今的局面

呵呵，说了半天，还是没能解决你的问题

Germs are tiny organisms that creep into our bodies and attack our immune system.

Unable to live on their own, germs invade our bodies and steal the nutrients and energy that our bodies produce. After gobbling up all of our nutrients and vitamins the germs leave behind their own harmful wastes called toxins. These toxins are the sources of our runny noses, high fevers, diarrhea and hoarse coughs.

Think back to the last time you were sick. Did you have a fever, runny nose, stomach ache, or throw-up often? Did you have to visit your doctor? Did you need medicine to help you get better.

Well… did you ever wonder why or how you became s