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.  Determine the required reactor volume.

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TLS Online TPP Program

#Question id: 16438

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

^{A DNA sample having mass 1 picogram undergoes PCR, the eluted DNA is weighted about 1 microgram, the minimum number of cycles required}

TLS Online TPP Program

#Question id: 16440

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

In RNA isolation, for protein free solution what will be the ratio at  nm A260/A280

TLS Online TPP Program

#Question id: 16442

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

Phenomenon of Smiling Effect is largely applicable in

TLS Online TPP Program

#Question id: 16444

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

Gels of 15% polyacrylamide are useful for separating proteins in the range Mr = 100,000 to 10,000,  while a 7.5% gel are used to separate 

TLS Online TPP Program

#Question id: 16446

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

Variants of PCR has been devised to enhance efficiency are

TLS Online TPP Program

#Question id: 16447

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

^{2000 bp pair DNA can be using by cutter of}