54. DNA isolated from four unidentified species of bacteria – A, B, C and D has been estimated to have 38%, 26%, 24% and 12% thymine, respectively. One of these […]
Tag: DBT JRF PYQ-2022
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DBT BET JRF 2022 Previous Year Questions and Video solution
Understanding the Role of Delta and Notch in Metazoan Development
53. Choose the correct statement in respect to metazoan development: A. Delta is a cell surface protein while Notch is an intracellular protein. B. Notch is a cell surface protein […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Understanding Probability in Dilution Plating: Determining the Likelihood of Colony Types
51. A culture contains two bacterial populations ‘X’ and ‘Y’ in equal proportion. On dilution plating only two colonies were obtained due to excessive dilution. The probability that one will […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Understanding Cytosine Methylation in Protein-Coding Genes: The Key Role of CpG Motifs
50. The cytosine residues in the DNA are methylated at specific di- or tri-nucleotide sequences. Which among these methylation motifs is predominantly found in case of protein-coding genes in animals? […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Understanding the Role of Eukaryotic RNA Polymerases in Gene Transcription
48. In the Table given below, the column (A) lists three eukaryotic RNA Polymerases and column (B) lists group of genes they transcribe. Identify the correct match from the options […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Understanding Acetyl Co-A Carbon Sources: Key Compounds in Metabolism
41. Which one of the following compound(s) is/are NOT the carbon source of acetyl Co-A? A. Ethanol B. Valine/isoleucine C. Pyruvate D. Oxaloacetate/acetoacetate Introduction: Understanding Acetyl Co-A Carbon Sources: Key […]
DBT BET JRF 2022 Previous Year Questions and Video solution
The Role of Eukaryotic RNA Polymerase II: Transcribing mRNA, miRNA, and snRNA Genes
39. Eukaryotic RNA Polymerase II transcribes: A. rRNA and tRNA genes B. mRNA and tRNA genes C. mRNA and 5S rRNA genes D. mRNA, miRNA and snRNA genes Detailed Explanation: […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Understanding Linker Histones: The Role of H1 in Chromatin Structure
38. Which one of the following acts as a linker histone? A. H1 B. H2A C. H2B D. H3 Detailed Explanation: In the intricate world of chromatin structure, histones are […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Why G:C Base Pairs Increase the Melting Temperature of DNA
The melting temperature (𝑡𝑚) of DNA is higher when the content of: A. A:T base pairs is higher. B. G:C base pairs is higher. C. A:T base pairs is same […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Reverse Phase Chromatography: Elution Order of Protein and Salt
In Reverse Phase chromatography of a mixture of protein and sodium chloride: A. The salt will elute before the protein B. The salt and protein will co-elute C. The salt […]
