I. Bacterial Cell Division 5.1 Cell Growth and Binary Fission 5.2 Fts proteins and the cell division plane 5.3 Peptidoglycan synthesis and cell division 肽聚糖合成与细胞分裂 5.4 Growth terminology and the concept of exponential growth 5.5 The mathematics of exponential growth 5.6 The Growth Cycle 生长周期