They can celled the flight.

英语翻译
The earliest organisms,single-celled creatures called prokaryotes,which include bacteria,probably did not age but rather divided damaged material equally among new cells.There was not a parent cell,but rather the original cell divided into two siblings that were,in effect,the same age and shared the damage from the original cell equally.
Somewhere along the way,that strategy changed so that a parent cell retained most of the damage from aging and the offspring started with a mostly clean slate.
欢迎有翻译才华的高手来交流，谢绝软件无技术含量的翻译，

描述单细胞有机体
求救啊,快点给我描述下单细胞有机体（single-celled organisims）.要描述动物和植物的.如果答得好的话,
只要描述一下 动物单细胞有机体和植物单细胞啊有机体就行了，