Tag: dbt jrf 2019

136. For an enzyme catalyzed reaction in a batch bioreactor, which one of the following is true under quasisteady state conditions: (1) Enzyme-substrate complex concentration remains nearly constant (2) Substrate […]

135. Scale up of a fermenter is done based on constant impeller tip speed. If the diameter of the impeller is increased by 10 fold, the agitator speed will: (1) […]

134. The ratio of gassed to ungassed powder (Pg/P) in a bioreactor will be in the range of: (1) 0.4 – 0.9 (2) 1.0 – 2.0 (3) 1.2 – 2.4 […]

133. In a chemostat, which one of the following would increase the exit cell concentration? (1) Increase in inlet substrate concentration (2) Increase in dilution rate (3) Increase in inoculum […]

132. In a bioprocess, assume that only cell mass is formed. Due to a variation in process conditions, if the microbial cell yield has halved, what would be the rate […]

131. In a crossflow filtration process, if the volumetric flow rate of the feed is 10 times that of the retentate, the concentration factor is: (1) 9 (2) 9/10 (3) […]

130. Which organization in India approves and gives regulatory clearance of biologicals? (1) Central Drugs Standard Control Organization (CDSCO) (2) National Institute of Biologicals (NIB) (3) Indian Pharmacopoeia Commission (IPC) […]

129. What property is involved in the separation of a mixture of analytes using gas chromatography? (1) Partitioning (2) Conductivity (3) Mass (4) Polarity Detailed Explanation: Question:What property is involved […]

128. A recombinant therapeutic protein is intracellularly produced in soluble form using E. coli. Which one of the following sequences of chromatographic separation methods is preferable for obtaining clinical grade […]

127. Match the common antibody origin with appropriate generic name/brand name of the antibody a Mouse i Binatumomab b Chimeric ii Herceptin c Humanized iii Pantimumab d Human iv Retuxan […]