Title 3. Physiology of bacteria.pptx ✅

Physiology of bacteria Dr. Smita Damke Department of Microbiology Datta Meghe Institute of Medical Sciences Jawaharlal Nehru Medical College Sawangi ( Meghe) Wardha
At the end of the lecture, student should be able to- Describe bacterial growth curve , nutrition & metabolism
Bacterial Growth & multiplication Divide by Binary Fission Nuclear division precedes cell division Cell divides by constrictive or pinching process or by ingrowth of transverse septum Generation time/Population doubling time : interval of time between two cell divisions under optimum conditions coliform bacilli: 20 min tubercle bacilli: 20hrs lepra bacilli : 20 days #
Bacterial growth : 2 levels Increase in the size Increase in the number Bacterial counts : Total counts : total number of cells in the sample, irrespective of whether living or not Viable count : number of living cells (cells capable of multiplication)