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TLS Online TPP Program

#Question id: 3890

Small signal molecules that regulate transcription are not known to:

#Section 3: Genetics, Cellular and Molecular Biology

  1. cause activator proteins to bind DNA sites.

  2. cause repressor proteins to bind DNA sites.

  3. directly bind to DNA sites.

  4. prevent activator proteins from binding to DNA sites.

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TLS Online TPP Program

#Question id: 27171

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

The percentage SIMILARITIES and IDENTITIES, respectively, between the two peptide sequences given below will be ______% and _____%.
Peptide I :
Phe-Ala-Arg-Arg-Gln-Trp-Leu-Thr-Phe-Thr
Peptide II:
Tyr-Ala-Lys-Glu-Gln-Tyr-Ile-Ser-Phe-Thr
TLS Online TPP Program

#Question id: 27172

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

Which option is correct for EMBL format?
TLS Online TPP Program

#Question id: 27175

#Section 5: Bioprocess Engineering and Process Biotechnology

A bacterial culture having a specific oxygen uptake rate of 5 mmol O2 (g- DCW)-1h-1 is being grown aerobically in a fed-batch reactor. The maximum value of the volumetric oxygen transfer coefficient is 0.18 s for the stirred tank bioreactor and the critical dissolved oxygen concentration is 20% of the saturation concentration (8 mg L-1). The maximum density to which the cells can be grown in the fed-batch process, without the growth being limited by oxygen transfer, is approximately
TLS Online TPP Program

#Question id: 27176

#Section 5: Bioprocess Engineering and Process Biotechnology

A strain of Azotobacter vinelandii is cultured in a 15-m³ stirred fermenter for alginate production. Under current operating conditions, ka is 0.17 s¹. The solubility of oxygen in the broth is approximately 8 × 10-3 kg m -3.
(a) The specific rate of oxygen uptake is 12.5 mmol g-1h-1. What is the maximum cell concentration supported by oxygen transfer in the fermenter.............in g/l
TLS Online TPP Program

#Question id: 27177

#Section 5: Bioprocess Engineering and Process Biotechnology

A strain of Azotobacter vinelandii is cultured in a 15-m³ stirred fermenter for alginate produc- tion. Under current operating conditions, kLa is 0.17 s-1. The solubility of oxygen in the broth is approximately 8 × 10-3 kg m-3.
(b) The bacteria suffer growth inhibition after copper sulphate is accidentally added to the fermentation broth just after the start of the culture. This causes a reduction in the oxygen uptake rate to 3 mmol g-1 h-1. What maximum cell concentration can now be supported by oxygen transfer in the fermenter?.....g/l
TLS Online TPP Program

#Question id: 27178

#Section 4: Fundamentals of Biological Engineering