A two-stage chemostat system is used for production of secondary metabolite. The volume of each reactor is 0.5 m³; the flow rate of feed is 50 l h^{- 1}. Mycelial growth occurs in the first reactor; the second reactor is used for product synthesis. The concentration of substrate in the feed is 10 gl^-1. Kinetic and yield parameters for the organism are:

                                                            

Assume that product synthesis is negligible in the first reactor and growth is negligible in the second reactor. What is the overall substrate conversion?

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#Question id: 27195

#Section 5: Bioprocess Engineering and Process Biotechnology

the rate constant for a first order reaction is 2 x 10^-2min^-1 the half-life period of reaction is

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#Question id: 14362

#Section 5: Bioprocess Engineering and Process Biotechnology

An experiment requires the use of 5 x 107 units of enzyme. The price for the enzyme is quoted for katal amounts. Allowing for a 20% excess for wastage, pipetting, and so forth, what approximate round number of katals of enzyme would you purchase? 

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#Question id: 3626

#Section 3: Genetics, Cellular and Molecular Biology

The major blood group locus in humans produces types A (genotypes AA or AO), B (genotypes BB or BO), AB (genotype AB), or O (genotype OO). Parents who are type AB and type O, what are the possible blood types of their offspring?

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#Question id: 3640

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following is true for the mechanism of excision repair?

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#Question id: 3714

#Section 3: Genetics, Cellular and Molecular Biology

Which DNA polymerase is most responsible for chain elongation in E. coli?