不要谈“细菌”就色变,这不,好细菌来了。有名的“好”细菌可固定空气中的氮使土壤肥沃,也可生活在人的肠道中帮助消化食物。并且如果没有细菌,世界上的垃圾能堆成摩天大楼——好细菌也能当清洁工。大肠杆菌在人的肠道中安居乐业。当它要运动时,它身体中的螺旋状纤丝就一会儿顺时针转动,一会儿逆时针转动。其实,这里面暗藏玄机。它能根据周围化学 Do not talk about “bacteria” on the color change, this is not, good bacteria come. Well-known “good” bacteria can fix the nitrogen in the air to make the soil fertile, and can also live in the human intestine to help digest food. And if there is no bacteria, the world’s garbage can be built into skyscrapers - good bacteria can also be cleaners. E. coli lives and works in the human intestine. When it is going to move, the spiral filaments in its body rotate clockwise for a while and counterclockwise for a while. In fact, there are hidden secrets here. It can be based on the surrounding chemistry