173. Which one of the following transgenes expressed in transgenic fish by an appropriate inducible promoter, may be used for detecting environmental toxicants? (1) Super oxide dismutase (2) Green Fluorescent […]
Blog
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 2020 Previous Year Questions and Video solutions
Understanding the Role of DNA Glycosylases in Base Excision Repair
DNA glycosylases are DNA repair enzymes involved in 1. base excision repair 2. negative supercoiling of DNA 3. SOS response 4. DNA replication Detailed Explanation:Correct Answer: Base excision repair Introduction […]
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 2019 Previous Year Questions and Video solution
Antifreeze Glycoproteins: Nature’s Cold Shield in Marine Organisms
172. The antifreeze molecules that prevent intracellular ice formation in marine organisms are generally: (1) calcium salts. (2) glycoproteins. (3) membrane phospholipids. (4) long chain alcohols. Antifreeze Glycoproteins in Marine […]
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 2020 Previous Year Questions and Video solutions
Approaches for Identifying Single Nucleotide Polymorphisms (SNPs)
Which one of the following approaches is generally not used for identifying an SNP? 1. protein sequencing 2. molecular beacons 3. microarrays 4. RNA Seq Detailed Explanation:Correct Answer: Protein sequencing […]
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 2019 Previous Year Questions and Video solution
Saxitoxin: The Heat-Stable Toxin Behind Paralytic Shellfish Poisoning (PSP)
171. Paralytic shellfish poisoning is a foodborne illness that typically develops after consumption of shellfish contaminated chiefly with the heat stable and acid stable toxin: (1) Okadaic acid. (2) Mitotoxin. […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding Image Formation in Transmission Electron Microscopy (TEM)
In Transmission Electron Microscope (TEM), a beam of electrons interact with the specimen to form image as 1. reflection 2. diffraction 3. shadow 4. scattering Detailed Explanation:Correct Answer:4. Scattering […]
