Cell Cycle and Cell Division Question 13
13. A bacterium divides every 35 minutes. If a culture containing $10^{5}$ cells per $ml$ is grown for 175 minutes, what will be the cell concentration per $ml$ after 175 minutes?
[1998]
(a) $5 \times 10^{5}$ cells
(b) $35 \times 10^{5}$ cells
(c) $32 \times 10^{5}$ cells
(d) $175 \times 10^{5}$ cells
Show Answer
Answer : c
Hints & Solutions
(c) $\frac{175}{35} \mathrm{~min}=5$ divisions
Number of cells formed $=(2)^5 \times 10^5=32 \times 10^5$
