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TLS Online TPP Program

#Question id: 4354

Which of the following statements correctly describes the primary difference between enhancers and proximal control elements?

#Section 3: Genetics, Cellular and Molecular Biology

  1. Enhancers are transcription factors; proximal control elements are DNA sequences.

  2. Enhancers improve transcription; proximal control elements inhibit transcription.

  3. Enhancers are located considerable distances from the promoter; proximal control elements are close to the promoter.

  4. Enhancers are DNA sequences; proximal control elements are proteins.

More Questions
TLS Online TPP Program

#Question id: 1905

#Section 2: General Biology

What is the approximate 1-year survival rate for cadaver kidneys grafted into individuals with no DR mismatches?
TLS Online TPP Program

#Question id: 3017

#Section 2: General Biology

Biofilms
TLS Online TPP Program

#Question id: 14770

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

Which of the following is a sequence alignment tool?
TLS Online TPP Program

#Question id: 3022

#Section 2: General Biology

Late log phase of the bacterial growth curve
TLS Online TPP Program

#Question id: 14313

#Section 5: Bioprocess Engineering and Process Biotechnology

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 cell concentration in the reactor and in the recycle stream.

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