103.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? (a) 35 × 10 5 cells (b) 32 × 10 5 cells (c) 175 × 10 5 cells (d) 85 × 10 5 cells
Option B A bacterium divides every 35 minutes. \ In 175 minutes it would be 2 175/35 times = 2 5 times. \ In 175 minutes 105 bacterium cells would be = 2 5 ¥ 10 5 = 32 ¥ 10 5 /ml.
