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 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 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 2021 Previous Year Questions and Video solution
Understanding the Conversion of UDP-Galactose to UDP-Glucose: A Key Biochemical Reaction
47. Conversion of UDP-Galactose to UDP-Glucose occurs by: (a)Dehydration and hydration (b)Oxidation and reduction (c)Oxidative addition (d)Reductive elimination Biochemical Conversion of UDP-Galactose to UDP-Glucose The conversion of UDP-Galactose to […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Biochemical Conversion of L-Pyruvate to L-Lactate
46. Conversion of L-pyruvate to L-lactate is an example of: (a)Isomerisation (b)Oxidation (c)Reduction (d)Transesterification Biochemical Conversion of L-Pyruvate to L-Lactate The conversion of L-pyruvate to L-lactate is a critical biochemical […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding DNA Polymerase: Key Functions in DNA Replication
45. During replicationDNA polymerase- (a)Can initiate DNA synthesis de novo (b)Cannot initiate DNA synthesis de novo (c)Synthesizes DNA in 3´ to 5´ direction (d)Unwinds DNA in a 5´ to 3´ […]
DBT BET JRF 2021 Previous Year Questions and Video solution
How Coughing Facilitates the Transmission of Infectious Diseases
43. Which one among the following can be effectively transmitted from person to person due to coughing? (a)AIDS & Tuberculosis (b)Dengue & COVID-19 (c)Malaria & Typhoid (d)Swine Flu & Adenovirus […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Flavin as a Two-Electron Carrier in the Electron Transport Chain
39. In the electron transport chain which one of the following can be a two-electron carrier? (a)Cupro proteins (b)Cytochrome (c)Flavin (d)Iron-sulphur proteins (Fe-S cluster) Article: Introduction The electron transport chain […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Why Bacteria Are Most Sensitive to Ampicillin During the Log Phase of Growth
36. At which phase of the growth curve are bacteria more sensitive to ampicillin? Options:- (a) Declining phase (b) Lag phase (c) Log phase (d) Stationary Article: Introduction Antibiotics like […]
