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TLS Online TPP Program

#Question id: 1297

What effect might an injection of RGD peptide have on tumor cells moving through the blood/lymph system?

#Section 3: Genetics, Cellular and Molecular Biology

  1. block cell attachment to new tissue and therefore prevent metastasis

  2. encourage clumping of cancer cells for removal by the immune system

  3. promote tumor cell binding to platelets and potentially lead to a fatal clot

  4. block integrin-mediated cell cycle progression

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TLS Online TPP Program

#Question id: 14430

#Section 5: Bioprocess Engineering and Process Biotechnology

Which is not correctly match, effect of process variables on mass transfer characteristics?

Process variablemass transfer characteristics
P. P/V oxygen transfer rate
q. Impeller tip speedmixing time
r. Reynoldsnumber shear rate
TLS Online TPP Program

#Question id: 14431

#Section 5: Bioprocess Engineering and Process Biotechnology

the centrifugal separation of biomass of 80um sized cells of density 1.04kgm^-3 was carried out in a tubular centrifuge having a diameter of 15cm and rotating at 1200 rev/min. calculate the residence time if distance between the liquid surface and the axis of rotation was 0.8cm, the liquid viscosity were 1.0kgm^-3 and 0.013 gcm^-ls-1respectively. 
TLS Online TPP Program

#Question id: 14432

#Section 5: Bioprocess Engineering and Process Biotechnology

the centrifugal separation of biomass of 80um sized cells of density 1.04kgm^-3 was carried out in a tubular centrifuge having a diameter of 15cm and rotating at 1200 rev/min. the axis of rotation was 0.8cm, the liquid viscosity were 1.0kgm^-3 and 0.013 gcm-ls^-1 respectively. Calculate the volumetric capacity of the centrifuge if its length was 40cm? 
TLS Online TPP Program

#Question id: 14433

#Section 5: Bioprocess Engineering and Process Biotechnology

the centrifugal separation of biomass of 80um sized cells of density 1.04kgm^-3 was carried out in a tubular centrifuge having a diameter of 15cm and rotating at 1200 rev/min. the axis of rotation was 0.8cm, the liquid viscosity were 1.0kgm-3 and 0.013 gcm-^ls^-1 respectively. centrifuge length is 40cm, calculate the  factor? 
TLS Online TPP Program

#Question id: 14434

#Section 5: Bioprocess Engineering and Process Biotechnology

the centrifugal separation of biomass of 80um sized cells of density 1.04kgm-3 was carried out in a tubular centrifuge having a diameter of 15cm and rotating at 1200 rev/min. the axis of rotation was 0.8cm, the liquid viscosity was 1.0kgm-3 and 0.013 gcm-ls-1 respectively. centrifuge length is 40cm, what will be the time required for centrifuging 1000 litres of broth? 
TLS Online TPP Program

#Question id: 14435

#Section 5: Bioprocess Engineering and Process Biotechnology

Differential centrifugation separates the particle which is different in