A 200-1itre stirred fermenter contains a batch culture of Bacillus subtilis bacteria at 28⁰C Air at 20⁰C is pumped into the vessel at a rate of 1 vvm; (vvm stands for volume of gas per volume of liquid per minute). The average pressure in the fermenter is 1 atm. The volumetric flow rate of off-gas from the fermenter is measured as 189 l min^-1. The exit gas stream is analysed for oxygen and is found to contain 20.1% 0₂. The dissolved-oxygen concentration in the broth is measured using an oxygen electrode as 52% air saturation. The solubility of oxygen in the fermentation broth at 28⁰C and 1 atm air pressure is 7.8 x 10^-3 kg m^-3. Determine the value of k_La for the system ____________

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#Question id: 2952

#Section 3: Genetics, Cellular and Molecular Biology

Throughout interphase,.. .........  are synthesized at a relatively constant rate, whereas  ............ are synthesized only during the S phase.

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#Question id: 27247

#Section 3: Genetics, Cellular and Molecular Biology

Which will require a higher temperature to denature?

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#Question id: 5151

#General Aptitude

If x and y are the two digits of the number 653 xy such that this number is divisible by 80, then x+y= ?

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#Question id: 599

#Section 2: General Biology

In a certain enzyme-catalyzed reaction the following steps occur:

1. A phosphate group on substrate A is transferred to a side chain of an active site residue of the enzyme.

2. The dephosphorylated form of substrate A dissociates from the enzyme.

3. Substrate B enters the active site and is phosphorylated with simultaneous regeneration of the enzyme in its original form.

What kind of kinetic mechanism is described?

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#Question id: 15928

#Section 6: Plant, Animal and Microbial Biotechnology

Name the cell line of the human embryonic lung?