Prokaryotes lack organelles such as nucleoli, mitochondria, plastids, Golgi apparatus, and do not exhibit cyclosis.

原核生物无细胞器，如核仁、线粒体、质体、高尔基体等，不出现胞质环流。

The best studied inducible and repressible enzyme in phytopathogenic prokaryotes is endo-pectate lyase in E. carotovora.

植物病原原核生物中研究得最清楚的是胡萝软菌的果胶酸内裂解酶。