An organism of the kingdom Prokaryotae,constituting the bacteria and cyanobacteria,characterized by the absence of a nuclear membrane and by DNA that is not organized into chromosomes.

• 原生物核原生物王国的组织，它组成细菌和藻青菌，其特点是缺乏一个核细胞膜以及没有组织成染色体的脱氧核糖核酸。