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。

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

物病原原核生物中研究得最清楚的是胡萝卜软腐菌的果胶酸内裂解酶。