bacteria calculation

Thats great, thanks for this Darren 😄

Hi Tracey - yes of course.

Example:

E. coli divides every 20 minutes. You inoculate a culture with exactly 25 bacterial cells. After 2 hours how many bacteria are present?

So we use the following formula :

i  x  2n

i = initial number of bacteria (so there are 25 to start off with)

n = number of divisions (there are x six 20 mins in 2 hours)

That gives:

25  x  2 (6 times)

25 x 2 x 2 x 2 x2 x 2 x2 (6 divisions) = 1600

I think my maths is correct!

Darren