# hey..i need one help..how to calculate th efinal density

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PriyaSar hey..i need one help..how to calculate th efinal density

if a nutrient medium contain 2 x 10 ^ 4 cells initially, culture is incubated at 25 degree  under aerobic conditions, generation time is 40 mins.

question 1- if the culture is allowed to grow for 8 hrs, how many generation would takes place?

question 2- what will be the cell population after 8 hours..?

help me with explanation

g a Hi Priya

Hi Priya

Seems like another HW question.

Consider this example an apply on yr question
Imagine there is 1 bacteria and divides every 20 min.

after 8 hrs........i.e 8x60min= 480min
total number o division cycles will be 480/20=24.

Cell population in this case hence will become:

2^23. This is a typical example becuase the starting population was 1 so only after first division that is when there will be 2 the power in multiplication will become 23.

In other examples It will be the number of division cycles.