Question

If a bacterial cell divides once every minute and takes 60 minutes to fill a cup, how much time it will take to fill half the cup?

• A. 30 min
• B. 32 min
• C. 29 min
• D. 59 min

Answer 1

Answer: (D)

59 min

• It is given that the doubling time of the given bacteria is 1 minute. It means the generation time of given bacterial cells is 60 seconds. If it takes 60 minutes to fill a cup, it will take 59 minutes to fill half the cup.
• At 59th minute, the cup will be half-filled and in the 60th minute, the bacterial cell will double up and cup will be full filled.

Thus, the correct answer is '59 min.'