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

原核生物无胞器，如核仁、线、、高尔基等，不出现胞环流。

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卜软腐的果胶酸内裂解酶。