Q.

A bacterium divides every 20 minutes. If a cultures containing 106 cells per ml is grown for 120 minutes, what will be the cell concentration per ml after 120 minutes?

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a

32 × 106 cells

b

64 × 106 cells

c

16 × 106 cells

d

120 × 106 cells

answer is B.

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Detailed Solution

The concentration of cells is 26 X 106. In 120 minutes 6 generations of divisions occur.
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A bacterium divides every 20 minutes. If a cultures containing 106 cells per ml is grown for 120 minutes, what will be the cell concentration per ml after 120 minutes?