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There are 10240 bacteria after 3 hours.
Initial population = 20
Time period = 3 hours
Time period in minutes = 3 hours x 60 minutes = 180 minutes
Number of doublings = 180 minutes / 20 minutes = 9 doublings
Final population = 20 x 2^9
Final population = 20 x 512
Final population = 10240
Bacteria doubling is the process in which one bacterial cell divides into two identical daughter cells. This process is known as binary fission and is the primary way bacteria reproduce. During this process, a single bacterium first replicates its single chromosome, which is then partitioned into two identical parts. The single cell then divides into two daughter cells, each containing one of the replicated chromosomes. This process is incredibly fast and can occur in as little as twenty minutes.
Bacterial doubling is an important process, as it allows bacteria to rapidly increase in number and spread. In optimal conditions, a single bacterial cell can divide into two daughter cells every twenty minutes, and this can continue for many generations. For this reason, bacteria can quickly become abundant in a given environment and pose a potential threat to human health. Fortunately, antibiotics are often able to help control bacterial doubling and limit the spread of certain bacteria.
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