62. The annotation of a genome sequence is generally stored in which of the following file formats? 1. FASTA 2. GFF 3. FAST5 4. BAM Answer: 2. GFF Explanation: […]
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DBT BET JRF 2018 Previous Year Questions and Video solution
Understanding the Role of Stage Size in Two-Stage Continuous Cultivation for Recombinant Protein Production
186. A recombinant protein is produced in Escherichia coli by two stage continuous cultivation at steady state. Upon induction of the culture in stage II, the specific growth rate of […]
DBT BET JRF 2023 Previous Year Questions and Video solutions
Characteristics of Siderophores
61. Siderophores are generally 1. Produced by bacteria only during sporulation 2. Pore forming toxins 3. Structurally diverse iron-chelating molecules 4. Cytokines that kill bacteria Answer: 3. Structurally diverse […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Understanding Flow Rate and Volume Relationship in Fed-Batch Cultivation for Steady-State Maintenance
185. In a fed batch cultivation, a specific growth rate of 0.2/h needs to be maintained. At the start of fedbatch cultivation, 200 mL/h of media is fed to 1000 […]
DBT BET JRF 2023 Previous Year Questions and Video solutions
Partition Coefficients of Solutes A and B in Liquid-Liquid Extraction
60. A student decided to perform liquid-liquid extraction of solute A and solute B separately. Based on the table below, indicate which of the following options is CORRECT about their […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Identifying the Mutation Responsible for Overproduction of Metabolite ‘X’ in a Biosynthetic Pathway
183. We wish to produce a metabolite ‘X’ whose biosynthetic pathway is feedback inhibited in the wild type strain. A mutation, which leads to overproduction of X, is discovered in […]
DBT BET JRF 2023 Previous Year Questions and Video solutions
Incorrect Feature about A-DNA
59. The following feature about A-DNA is INCORRECT 1. The DNA is arranged in a left handed double helix 2. The base pairs in A-DNA are not perfectly perpendicular to […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Calculating the Weight of Solids Converted to Crystals in a Continuous Crystallizer
182. In a continuous crystallizer, 100 g of a saturated solution of sugar at 85% (w/w) enters the crystallizer and leaves the crystallizer at 70% (w/w). The weight of input […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Calculation of Rate Constant (k) for a First-Order Reaction in a CSTR
181. In a CSTR, first order reaction takes place converting A to B. If at a dilution rate (D)= 0.5 h-1 , 50% of A gets converted to B, then […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Flow Velocity Calculation in a Plug Flow Bioreactor with Cell Recycling
180. In a plug flow bioreactor running at steady state, 12.5% cells are recycled back to the inlet. If the cells grow at μmax=1 h-1 throughout the length of the […]
