An industrial waste-water stream is fed to a stirred-tank reactor continuously and the cells are recycled back to the reactor from the bottom of the sedimentation tank placed after the reactor. The following are given for the system: F = 100 l/h; S0 = 5000 mg/l; mm = 0.25 h^-1 ; Ks = 200 mg/l; α (recycle ratio) = 0.6; C (cell concentration factor) = 2; Y ^M _X/S = 0.4. The effluent concentration is desired to be 100 mg/l.  The effluent concentration is desired to be 100 mg/l. If the residence time is 2 h in the sedimentation tank, determine the volume of the sedimentation tank and cell concentration in the effluent of the sedimentation tank.

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#Question id: 1672

#Section 2: General Biology

Using only random VDJ recombination, from 40 V, 23 D, and 6 J gene segments, what are the number of possible variable regions of an antigen receptor molecule?

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#Question id: 15607

#Section 6: Plant, Animal and Microbial Biotechnology

In gene transformation over high expression can be achieved by expressing the gene 

1. Inducible promoter

2. Constitutive  promoter

3. Terminator sequence

4. Increasing copy no. of gene

Which of the following are correct

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#Question id: 14141

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

Which of the following statement is correct about Local alignment?

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#Question id: 3955

#Section 3: Genetics, Cellular and Molecular Biology

When chromatin is treated with nonspecific nucleases, what is the length of the resulting pieces of DNA?

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#Question id: 3027

#Section 2: General Biology

Which of the following contains a copy of the chromosome, along with a small amount of dehydrated cytoplasm, within a tough wall?