Calculate the total number of cells suspended in a final volume of 5 ml, considering that the cells were diluted 1: 2 before counting and the number of cells counted with the hemocytometer was 400 .......... 10^7

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#Question id: 15649

#Section 4: Fundamentals of Biological Engineering

A bacterial culture having a specific oxygen uptake rate of 5 mmol O2 (g DCW)⁻¹ h⁻¹ is being grown aerobically in a fed-batch reactor. The maximum value of the volumetric oxygen transfer coefficient is 0.18 s⁻¹ for the stirred tank bioreactor and the critical dissolved oxygen concentration is 20% of the saturation concentration (8 mg L⁻¹). The maximum density to which the cells can be grown in the fed-batch process, without the growth being limited by oxygen transfer, is approximately

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#Question id: 15650

#Section 4: Fundamentals of Biological Engineering

For scaling up of a bioreactor, the following parameter is assumed to be constant

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#Question id: 15651

#Section 4: Fundamentals of Biological Engineering

Power number, also called Newton’s number, is defined as a dimensionless parameter relating to:

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#Question id: 15671

#Section 6: Plant, Animal and Microbial Biotechnology

The lag phase of the bacterial growth curve is marked by

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#Question id: 15672

#Section 6: Plant, Animal and Microbial Biotechnology

Late log phase of the bacterial growth curve

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#Question id: 15673

#Section 6: Plant, Animal and Microbial Biotechnology

A urine sample with more than 100,000 organisms is considered indicative of infection. A urine sample containing 5,000 bacteria, with a generation time of 30 minutes, sits for 3 hours before finally being assayed. How many bacteria will then be present within the sample?