TLS Online TPP Program

#Question id: 3799


If replicating bacteria are given a short pulse of radiolabeled thymidine and rapidly killed, the radiolabel shows up as:

#Section 3: Genetics, Cellular and Molecular Biology
  1. large DNA molecules only.

  2. mostly large DNA molecules and very few short DNA molecules.

  3. mostly short DNA molecules and very few large DNA molecules.

  4. free nucleotides only.

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TLS Online TPP Program

#Question id: 14929

#Section 5: Bioprocess Engineering and Process Biotechnology

Escherichia coli grows with a doubling time of 0.5 h in the exponential growth phase. How much time would be required to grow the cell culture from 0.1 to 10 kgdry cell m-3 

TLS Online TPP Program

#Question id: 14930

#Section 5: Bioprocess Engineering and Process Biotechnology

E. coli grows from 0.10 to 0.50 kg dry cell m-3 in 1 h. Assuming exponential growth during this period, evaluate the specific growth rate 

TLS Online TPP Program

#Question id: 14931

#Section 5: Bioprocess Engineering and Process Biotechnology

E. coli grows from 0.10 to 0.50 kg dry cell m-3 in 1 h. Evaluate the doubling time during the exponential growth phase 

TLS Online TPP Program

#Question id: 14932

#Section 5: Bioprocess Engineering and Process Biotechnology

 E. coli grows from 0.10 to 0.50 kg dry cell m-3 in 1 h. How much time would be required to grow from 0.10 to 1.0 kg dry cell m-3? You may assume exponential growth during this period 

TLS Online TPP Program

#Question id: 14933

#Section 5: Bioprocess Engineering and Process Biotechnology

E. coli was continuously cultured in a continuous stirred tank fermenter with a working volume of 1.0 I by chemostat. A medium containing 4.0 g1-1 of glucose as a carbon source was fed to the fermenter at a constant flow rate of 0.5 I h-1, and the glucose concentration in the output stream was 0.20 g1-1, The cell yield with respect to glucose YxS was 0.42 g dry cells per gram glucose. Determine the cell concentration in the output stream 

TLS Online TPP Program

#Question id: 14934

#Section 5: Bioprocess Engineering and Process Biotechnology

E. coli was continuously cultured in a continuous stirred tank fermenter with a working volume of 1.0 I by chemostat. A medium containing 4.0 g1-1 of glucose as a carbon source was fed to the fermenter at a constant flow rate of 0.5 I h-1, and the glucose concentration in the output stream was 0.20 g I-1. The cell yield with respect to glucose YxS was 0.42 g dry cells per gram glucose. Determine specific growth rate