C. roseus cells immobilized in Ca-alginate beads of diameter 0.5 mm are used for production of indole alkaloids (IA) in a fluidized-bed bioreactor. The rate limiting nutrient is glucose and no intraparticle diffusion limitations exist. Use the following data: Flow rate of the feed: Q = 1 l/h, Glucose in the feed: So = 30 g/l, Plant Cell Concentration: X = 6 g/l reac. The rate constant for IA formation: k = 5 d-1 (g/l)^-1 Ks = 0.4 g/l, Column diameter: Do = 0.15 m. Growth is negligible and Monod kinetics is valid. For 95% glucose conversion determine volume. 

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#Question id: 3740

#Section 3: Genetics, Cellular and Molecular Biology

The reaction catalyzed by DNA photolyase is an example of what type of repair?

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#Question id: 635

#Section 2: General Biology

The enymatic rate constant (kcat/Km) of orotidine 5ʹ-phosphate decarboxylase is 6 x 10⁷ M^-1s^-1 and the nonenzymatic rate constant (kn) is 3 x 10^-16 s^-1.  What is the value of the enzymeʹs catalytic proficiency?

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#Question id: 1668

#Section 2: General Biology

What does the cytoplasmic region of cell surface IgM consists of?

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#Question id: 14350

#Section 5: Bioprocess Engineering and Process Biotechnology

Henry's law relates 

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#Question id: 18941

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

With the construction of cDNA libraries in which each gene is fused to an epitope tag, investigators can precipitate the protein product of a gene by complexing it with the antibody that binds the epitope, a process called