88. Midblastula transition is a phenomenon that occurs during early development in certain organisms. It refers to: (1) Transition from maternal to zygotic gene expression (2) Transition of morphology during […]
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DBT BET JRF 2020 Previous Year Questions and Video solutions
How Do Base Pairs Stack in the DNA Helix? Understanding the Structure of AT and GC Pairing
In the DNA helix, the GC and AT base pairs 1. stack on top of each other, parallel to the helix axis 2. stack on top of each other, perpendicular […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding the Impact of DNA Base Changes: Which Codon Position Matters Most?
44. The consequences of a DNA base change in a mutation are maximum, if the base change is located in the: (a) First or second position of a codon , […]
DBT BET JRF 2019 Previous Year Questions and Video solution
Understanding the Hayflick Limit in Mammalian Cells: Implications for Cell Culture and Aging
87. Hayflick limit of mammalian cells refers to which one of the following? (1) Cells in primary cell culture undergo senescence after 50-60 passages. (2)Primary cells cultured in vitro do […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Selecting Recombinant Clones Using pBR322: Which Antibiotic Plate to Use?
43. A student clones a gene of interest within the ampicillin resistance gene of pBR322 vector for transformant selection, the student will use: (a) Ampicillin plates , (b) Both Ampicillin […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
What Is Hyaluronic Acid Made Of? Understanding Its Mucopolysaccharide Composition
The mucopolysaccharide hyaluronic acid is composed of 1. N-acetyl D-glucosamine only 2. D-glucuronic acid only 3. neither N-acetyl D-glucosamine nor D-glucuronic acid 4. both N-acetyl D-glucosamine and D-glucuronic acid Introduction […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Title: Understanding Yamanaka Factors and Their Role in Induced Pluripotent Stem Cells (iPSCs)
86. Which one of the following sets of protein factors, named as Yamanaka factors, can be used to convert mammalian somatic cells into induced pluripotent stem cells? (1) Oct3/4, Sox2, […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Which Component of an Enveloped Virus Is Not Encoded by the Viral Genome?
42. Which one of the following components of an enveloped virus particle is NOT encoded by the viral genome? (a) Capsid proteins , (b) Envelope lipids , (c) Non- structural […]
DBT BET JRF 2019 Previous Year Questions and Video solution
Advanced Immunofluorescence Microscopy Methods for Protein Distribution Analysis
85. For identifying the distribution of a specific protein in a tissue, which one of the following types of immunofluorescence microscopic methods has attained the highest level of resolution? (1) […]
DBT BET JRF 2021 Previous Year Questions and Video solution
What Sequence Do Prokaryotic Ribosomes Bind To?
41. Prokaryotic ribosomes bind to which one of the following: (a) Kozak sequence, (b) Ori sequence, (c) Promoter sequence, (d) Shine-Dalgarno sequence, What Sequence Do Prokaryotic Ribosomes Bind To? Protein […]
