One of the reasons bacteria can be so deadly is because they multiply very quickly. E. coli has a doubling time of around 15 min
utes. This means that if 100 bacteria are left alone for 2 hours, they will multiply to become: 12,400 Bacteria
18,400 Bacteria
25,600 Bacteria
36,600 Bacteria
Bacteria can divide and produce double their population very quickly. As mentioned in the question bacteria multiply every 15 minutes to their double number. Finding the number of bacteria after 2 hours is simple mathematics. Two hours means 120 minutes and dividing it to 15. The result will be 8 which mean the bacteria double their colony 8 time so,
100×2 to the power 8 = 100 (initial number of bacteria)×2×2×2×2×2×2×2×2= 25600
Thus, the correct answer is option- 25600 bacteria.
