148. The major drawback in using wild type S. cerevisiae for producing ethanol from biomass hydrolysate is: (1) Low biomass yield of hexose sugars (2) Presence of solid residues (3) […]
Blog
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding the Decline in Specific Growth Rate in Constant Volume Fed-Batch Cultures
At what condition does the specific growth rate of the microorganisms decline in a constant volume fed-batch culture 1. cell biomass increasing 2. cell biomass is equal to zero 3. […]
DBT BET JRF 2019 Previous Year Questions and Video solution
Understanding Heat Transfer Designs in Bioreactors: The Least Used Option
147. The least used heat transfer-design in bioreactor is: (1) Jacket (2) Limpet coil (3) Internal cooling coil (4) External heat exchanger Detailed Explanation: Question:The least used heat transfer design […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding Double Pain Sensation: The Role of Dual Pain Pathways
126. Double pain sensation that is occasionally felt following painful stimulation of the skin isdue to: (a) Application of two painful stimuli simultaneously at two different sites, (b) Perception of […]
DBT BET JRF 2019 Previous Year Questions and Video solution
Calculating Time for Substrate Consumption in Zero-Order Reactions
146. A substrate is consumed in a zero order reaction such that the concentration falls from 40 g/l to 20 g/l in 4 h. How long will it take the […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding the Commercial Production of Dextran: The Role of Microorganisms
Which of the following microorganism is used for commercial production of dextran? 1. Baciluspolymyxa 2. Streptomyces olivaceus 3. Leuconostocmesenteroides 4. Bacillus thuringiensis Detailed Explanation: Correct Answer: 3. Leuconostoc mesenteroides What […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding Sickle Cell Anemia: A Point Mutation in the Coding Region
125. Which one of the following diseases in caused due to a point mutation in the coding region of the associated gene? (a)Hemolyticanemia (b) Sickle cell anemia (c) b-thalassemia (d) […]
DBT BET JRF 2019 Previous Year Questions and Video solution
Maximizing Ethanol Yield from Glucose in Microbial Conversion
145. The maximum yield for microbial conversion of Glucose (C6H12O6) to ethanol (C2H5OH) on a mol/mol basis is approximately: (1) 1 (2) 2 (3) 3 (4) 0.5 Detailed Explanation: Question:The […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding Protein A: Its Role and Extraction from Staphylococcus aureus
124. Protein A, which has strong affinity for Fc region of immunoglobulin, is extracted from: (a) Saccharomyces cerevisae, (b) Staphlyococcuspyogenes, (c) Staphylococcus aureus, (d) Staphylococcus sanjuis Understanding Protein A: Its […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding Vaccines: Attenuated vs. Inactivated Pathogens
All the vaccines mentioined below are attenuated or inactivated whole pathogen except 1. oral polio vaccine 2. Hepatits A vaccine 3. rotavirus vaccine 4. Tetanus vaccine Detailed Explanation: Correct […]
