If E.coli are rapidly dividing as fast as possible, which phase of growth are they in?

Question

Lag, static, log, death, or stationary???????? Help!!

Answer 1

definitely log phase (also known as exponential phase)..it makes sense if you look at the possibilities
lag, means its slow, ya know "hey jimmy stop lagging behind" or something along those lines right
static, means that theres nothing really happening...although in this case there is something happening its just that the deaths and divisions are equal so there is a STATIC number of bacteria...
death phase is pretty self explainatory
so i think now youre all set

Answer 2

Bacterial growth in a closed system (ie. no new nutrient, gases in and no waste products removed) have 4 phases:

lag is when bacteria are added to new medium and they take time to adjust to new conditions (divisions are slow)

log is when bacteria are undergoing rapid binary fissiion (1 cell=2, 2 cells=4, 4 cells = 8...); this is called log or exponential since one can calculate the number of bacteria after n generations by the following equation: 2 exp n (assuming one starts with only one bacterium) or 2 exp n * x where x = number of starting bacteria

The next phase is stationary, where number of divisions = number of cell deaths (ie.population remains constant)

Death phase is the final phase where cells die off due to build-up of toxic waste products and lack of nutrients

static means 'the same', so would not represent rapid division

Answer 3

Log (also called exponential) phase