Multiple choice

A flask containing 100 ml and a bioreactor containing 1 liter of nutrient, both were inoculated with 500 cells of a certain bacteria sp. The flask was incubated on mechanical shaker and aeration was introduced in bioreactor at 37°C for 2 hrs. The final pH in flask was found to be 5 with 105 cells/ml and that in bioreactor was 7 with 1012 cell/ml.

Which of the following is most apparent from the above statement?

  1. Bioreactors are better vessels for maintaining bacterial growth for a longer time.

  2. Bacteria does not like flasks.

  3. Flasks are better for acid production by fermentation.

  4. Flasks are bactericidal.
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A Correct answer
Explanation

Bioreactors are better vessels for maintaining bacterial growth for a longer time: The conditions in both the vessels are same. But bacterial concentration is more in bioreactor because they get large space to multiply and divide.

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