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TLS Online TPP Program

#Question id: 2138

Integrins are

#Section 2: General Biology

  1. membrane proteins that are involved in ion transport.

  2. membrane proteins that are involved in sugar transport.

  3. membrane proteins that mediate cell adhesion.

  4. proteins of the extracellular matrix that bind to cell surface proteins.

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TLS Online TPP Program

#Question id: 14741

#Section 5: Bioprocess Engineering and Process Biotechnology

Microbial cell recovery is carried out in a continuous disc-stack centrifuge. The centrifuge is operated at 5000 rpm for separation of baker's yeast. At a feed rate of 60 1/min, 50% of the cells are recovered. At constant speed, solid recovery is inversely proportional to flow rate. What operating speed is required to recover 90% of cells if the flow rate in the centrifuge is maintained at 601/min? 
TLS Online TPP Program

#Question id: 14742

#Section 5: Bioprocess Engineering and Process Biotechnology

Gel chromatography is used for hormone separation. A pilot-plant scale gel chromatography column packed with sephacryl resin is used to separate two hormones, A and B. The column is 5 cm in diameter and 30 cm in height: V, = 1.9x 10-4m3, Wr = 3x10-3m3 /kg dry sephacryl, ps =1.25 x 103 kg/m3 . The partition coefficients are kpA =0.38 and kpB= 0.15. If the eluting flow rate is 0.7 I/h, what is the retention time for each hormone? 
TLS Online TPP Program

#Question id: 14743

#Section 5: Bioprocess Engineering and Process Biotechnology

for the fermenter with the given data. 
Air is sparged with 0.4 vvm, it is equipped with two sets of impellers and a flat-blade turbine with four baffles. calculate power, P 
TLS Online TPP Program

#Question id: 14744

#Section 5: Bioprocess Engineering and Process Biotechnology

For production of an enzyme used for synthesis of a sun protection lotion, the required kinetic data and constants are: 
vmax = 2.3 mmol.m-3 s-1 Km = 8.9 mmol.-1 So = 12 mmol1- 
Find the reaction time for 95% conversion of raw material 
TLS Online TPP Program

#Question id: 14745

#Section 5: Bioprocess Engineering and Process Biotechnology

heat exchanger, one transfer unit means 
TLS Online TPP Program

#Question id: 14746

#Section 5: Bioprocess Engineering and Process Biotechnology

During cultivation of microorganism in a fermenter, various parameters are controlled by appropriate mechanism, match the following