E. coli have a maximum respiration rate, qO2max, of about 240-mg O2/g-dry wt-h. It is desired to achieve a cell mass of 20 g dry wt/l. The kLa is 120 h-1 in a 1000-l reactor (800 l working volume). A gas stream enriched in oxygen is used (i.e., 80% O2) which gives a value of C* = 28 mg/L. If oxygen becomes limiting, growth and respiration slow; for example,

                                     

   where CL is the dissolved oxygen concentration in the fermenter. What is CL when the cell mass is  at 20 g/l?

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#Question id: 14688

#Section 1: Engineering Mathematics

If A and B are two events such that  = 1/ 2 then the events A and B are

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#Question id: 18689

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Ab initio approach makes structural predictions based on 

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#Question id: 23193

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

When you try to image two fluorescent spots separated by 75 nm the fluorescence overlap so much that they look like one spot. Which microscopy can resolve this?

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#Question id: 1995

#Section 2: General Biology

What is the primary function of humoral immunity?

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#Question id: 14527

#Section 1: Engineering Mathematics

What is the value of