TLS Online TPP Program

#Question id: 19139


Which statement is correct for statistical significance of sequence alignment?

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology
  1. Statistically significant sequence alignment will be able to provide evidence of homology between the sequences involved.
  2. Statistical significance provides the proof that observed sequence alignment can occur by random chance or the alignment is indeed statistically.
  3. PRSS is a web-based program that can be used to evaluate the statistical significance of DNA or protein sequence alignment.
  4. None of the above.
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TLS Online TPP Program

#Question id: 14896

#Section 5: Bioprocess Engineering and Process Biotechnology

Turbidostat is recommended when continuous fermentation needs to be carried out at 

TLS Online TPP Program

#Question id: 19142

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

Which among the following are secondary biological databases 
(1) DDBJ                     (2) EMBL
(3) Pfam                      (4) Profiles
(5) SCOP

TLS Online TPP Program

#Question id: 15999

#Section 6: Plant, Animal and Microbial Biotechnology

Toxicity due to accumulation of ammonia can be overcome

TLS Online TPP Program

#Question id: 181

#Section 2: General Biology

Titration of valine by a strong base, for example NaOH, reveals two pK’s. The titration reaction occurring at pK2 (pK2 = 9.62) is:

TLS Online TPP Program

#Question id: 14200

#Section 5: Bioprocess Engineering and Process Biotechnology

A fluidized-bed, immobilized-cell bioreactor is used for the conversion of glucose to ethanol by Z. mobilis cells immobilized in k-carrageenan gel beads. The dimensions of the bed are 10 cm (diameter) by 200 cm. Since the reactor is fed from the bottom of the column and because of CO2 gas evolution, substrate and cell concentrations decrease with the height of the column. The average cell concentration at the bottom of the column is X0 = 45 g/l, and the average cell concentration decreases with the column height according to the following equation:

                             

where Z is the column height (cm). The specific rate of substrate consumption is qS = 2 g S/g cells . h. The feed flow rate and glucose concentration in the feed are 5 l/h and 160 g glucose/l, respectively.

Determine the ethanol concentration in the effluent (g/l . h) if YP/S = 0.48 g ethanol/g glucose