Which of the following does NOT describe a mechanism that cells use to regulate enzyme activities?

A. Cells control enzyme activity by phosphorylation and dephosphorylation.

B. Cells control enzyme activity by the binding of small molecules.

C. Cells control the rates of diffusion of substrates to enzymes.

D. Cells control the rates of enzyme degradation.

E. Cells control the rates of enzyme synthesis.

F. Cells control the targeting of enzymes to specific organelles. 

TLS Online TPP Program

#Question id: 27169

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

Which of the option is not suitable for given alignment

TLS Online TPP Program

#Question id: 27170

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

Pfam database contains information of

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