53. The mechanism that permits immunoglobulins to be synthesized either in a membrane bound or secreted form is: 1. Allelic exclusion 2 Co-dominant expression 3. Differential RNA processing 4. Class-switch […]
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DBT BET JRF 2022 Previous Year Questions and Video solution
Constants in Enzymatic Reactions: What Remains Unchanged?
123. Which one of the following will NOT change upon adding an enzyme to a chemical reaction or changing the concentration of reactants or products? A. βπΊΒ° B. πΎππ C. […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Title: Understanding Recombination Signal Sequences in V(D)J Recombination
52. Which one of the following is NOT a part of the recombination signal sequence in VDJ recombination? 1. A conserved 7 bp consensus sequence 2. Locus control regions (LCR) […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Cell Cycle-Based Cell Separation: The Power of Counterflow Centrifugal Elutriation
122. Which one of the following cell separation techniques allows cells from different stages of the cell cycle to be separated simultaneously with minimal perturbation to their physiology? A. counterflow […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Impact of Folic Acid Deficiency on Amino Acid Biosynthesis Pathways
51. Which one of the following amino acid biosynthesis pathways is affected in folic acid deficiency? 1. Aspartate from oxaloacetate & glutamate 2. Glycine from glucose and alanine 3. Glutamate […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Title: Polyadenylation Modifications in Eukaryotic Pre-mRNA: Key Positions
50. In an eukaryotic pre-mRNA the number of positions where polyadenylate modifications occur is: 1. 5 2. 2 3. 3 4. 4 PART B Polyadenylation Modifications in Eukaryotic Pre-mRNA: An […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Role of 2′, 3′ Dideoxy-ribonucleoside Triphosphates in DNA Sequencing
121. Which one of the molecular processes utilize 2β², 3β² Dideoxy-ribonucleoside triphosphates? A. DNA synthesis for primers. B. Okazaki fragment formation during lagging strand synthesis. C. DNA sequencing by synthesis. […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Taq DNA Polymerase vs. Klenow Fragment: Key Differences in Enzyme Activity
48. Taq DNA polymerase differs from the Klenow fragment in having: 1. 5β²-3β² polymerase activity 2. 5β²-3β² exonuclease activity 3. 3β²-5β² exonuclease activity 4. Endonuclease activity Taq DNA Polymerase vs. […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Glycosylation of Proteins in the ER: Where Do Glycan Moieties End Up?
120. Proteins are glycosylated in the endoplasmic reticulum. In the final structures, the glycan moieties are typically present: A. on the surface of these proteins. B. in the core of […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Understanding Nick Translation Protocol: Effect of Gamma Phosphate-Labeled ATP in DNA Labeling
47. Gamma phosphate labelled ATP molecule was used to label a DNA fragment using the nick translation protocol. This would result in: 1. Labelling at 5β²end 2. Labelling at 3β²end […]
