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In a culture of E.coli the cell populati...

In a culture of E.coli the cell population increased from `1.5 xx 10^(6)` cells/ml to `12 xx 10^(6)` cells/ml in 36 minutes. The generation time is

A

6 min.

B

9 min.

C

12 min.

D

18 min.

Text Solution

Verified by Experts

The correct Answer is:
C
Increase in number is from `1.5xx10^(6)" to "12xx10^(6)` i.e., 8 times. 8 times take 3 mitotic divisions `1(1)/()2(II)/()4(III)/()8` therefore, generation time is `(36)/(6)=12` minutes.
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TRUEMAN BIOLOGY-CELL CYCLE AND CELL DIVISION-MULTIPLE CHOICE QUESTIONS
  1. Aster disappears in

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  2. A bacterium divides every 35 minutes. If a culture containing 10^(5) c...

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  3. In a culture of E.coli the cell population increased from 1.5 xx 10^(6...

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  4. Longitudinal duality of each chromosome of a homologous pair becomes c...

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  5. The term "meiosis" was given by

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  6. In meiosis centromeres divide and chromatids separate during

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  7. Name the stage of mitosis in which chromosomes are arranged on the equ...

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  8. In a dividing somatic cell, which one of the following stage is diploi...

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  9. Anastral mitosis is found in

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  10. Leptotene chromosomes have

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  11. Bead-like thickened portions of leptotene chromosomes are

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  12. If a somatic cell undergoes two successive nuclear divisions without c...

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  13. Name the stage of cell cycle at which one of the following events occu...

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  14. What is the average cell cycle span for a mammalian cell?

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  15. When energy is stored and cell undergoes differentiation, the stage is...

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  16. Which one of the following precedes re-formation of the nuclear envelo...

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  17. Postmitotic gap phase and synthetic phase refer to

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  18. The two chromatids of a metaphase chromosome represent

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  19. Which one of the following pair is correctly matched?

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  20. A cell has 46 chromosomes at each pole in mitotic telophase. In this d...

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