52. Enzyme-linked immunospot (ELISPOT) assay measures: (a)Cytokine concentration in culture supernatant (b)Expression of cytokine gene (c)Intracellular cytokine concentration (d)Number of cytokine releasing cells at single cell level Article: Introduction The […]
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DBT BET JRF 2020 Previous Year Questions and Video solutions
DNA denaturation cooperative phenomenon
Denaturation of DNA is a 1. temperature-independent process 2. linear process 3. cooperative phenomenon 4. neither linear nor a cooperative process What is DNA Denaturation? DNA denaturation refers to the […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Why You Don’t Need Topoisomerase in a PCR Reaction Mix for Gene Amplification
51. DNA replication requires DNA-Topoisomerase to remove the supercoiling of DNA that accumulates at the end of a growing replication fork. You wish to perform a PCR amplification of a […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Which Aminoacyl-tRNA Binds First to the P Site During Bacterial Translation?
50. During translation which one of the following aminoacyl-tRNA binds first to the P site of bacterial ribosomes? (a) fMet-tRNAfMet (b) fMet-tRNAMet (c) Met-tRNAfMet (d) Met-tRNAMet Article: Introduction In the […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding Why Sucrose is Non-Reducing Sugar
Which of the following is a non-reducing sugar? 1. fructose 2. galactose 3. ribose 4. sucrose What is a Non-Reducing Sugar and Why is Sucrose One? In the world of […]
DBT BET JRF 2021 Previous Year Questions and Video solution
What Is the Shortest Land Route Between Mumbai and Mexico on the Same Latitude?
49. The shortest land route has to be determined from Mumbai to a city X in Mexico at the same latitude. The route will be: (a)A line curving so that […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
How to Separate Single-Stranded DNA from Double-Stranded DNA Using Hydroxyapatite Chromatography
Single stranded DNA can be separated from double stranded DNA efficiently using 1. hydrophobic interaction chromatography 2. RP-HPLC 3. hydroxyapatite chromatography 4. urea PAGE How to Separate Single-Stranded DNA […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding Seating Arrangements: Solving Complex Constraints in Seating Puzzles
A, B, C, and D are to be seated in a row, But C and D cannot be together. Also B cannot be at the third place. Which of the […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Why Trypsin Cleavages at Arginine and Lysine Residue amino acid
Trypsin cleaves a protein at the 1. C – terminus side of Arg/Lys residues 2. N – terminus side of Arg/Lys residues 3. C – terminus side of Val/lle residues […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding the Differences Between Prokaryotic and Eukaryotic Cells
Which of the following is NOT true ? 1. prokaryotes are unicellular organisms 2. eukaryotes can be either multicellular or unicellular organisms 3. prokaryotic cells lack nucleus whereas eukaryotic cells […]
