2.7 Bacterial Growth

FtsZ

Protein that pinches cell while splitting to allow a division of two

Generation time (g)

amount of time a bacterial cell needs to divide and population doubles

generation time of E. Coli

Generation time is 30 mins

formula of generation time

g = t/n

what does n equal to

number of cell divsions

Lag phase

initial phase of no growth likely caused by switching to a new environment or not having enough of an initial nutrient.

Exponential phase

When cells begin to divide an population doubles

stationary phase

population stop doubling because nutrients are no longer rich. cell growth rate = death rate

death phase

growth rate is less than the death rate due to too much

formula for number of cells at the final time

N₀2ⁿ