Question

How many bacteria would be produced from single cell after 120minute if the generation time is 20minute.

Answer 1

 - 20 minutes: 1 bacterium 
20 - 40 minutes: 2 bacteria 
40 - 60 minutes: 4 bacteria 
60 - 80 minutes: 8 bacteria 
80 - 100 minutes: 16 bacteria 
100 - 120 minutes: 32 bacteria.

Answer 2

After 20 min bacteria throw asexual reproduction become double... So 1 bacteria become double after 20 min means 2 in no. In 120 min 6 time asexual reproduction occure ..so after 40 min ..4 then after 60min..8 and after 80 min 16 ..after 100 min 32 and after 120 min 64 bacteria produce ....ans=64 bacteria.