in sterilization, del factor increases as the final number of cells 

#Question id: 14239

#Section 5: Bioprocess Engineering and Process Biotechnology

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. Calculate the oxygen transfer rate_____________

#Question id: 14286

#Section 5: Bioprocess Engineering and Process Biotechnology

#Question id: 21730

#Section 5: Bioprocess Engineering and Process Biotechnology

#Question id: 3661

#Section 3: Genetics, Cellular and Molecular Biology

______________ short fragment of DNA produced during replication of the lagging strand.

#Question id: 410

#Section 4: Fundamentals of Biological Engineering

For the reaction A -> B, the Keq' is 10^4.  If a reaction mixture originally contains 1 mmol of A and no B, which one of the following must be true?