76. Helicobacter pylori survives in the acidic environment of the stomach because it: 1. has acid resistant cell wall 2. releases alkaline compounds 3. produces urease enzyme 4. uses acid […]
Blog
DBT BET JRF 2022 Previous Year Questions and Video solution
The Role of Zooxanthellae in Nourishing Coral and Skeleton Formation
134. Choose the correct option to fill up the blanks: ___________ nourish the host coral as well as help it deposit its skeleton. They perform ________ and pass on some […]
DBT BET JRF 2019 Previous Year Questions and Video solution
The Impact of Radiolabeling in Glycolysis: Understanding the Specific Activity of Pyruvate
75. The Carbon (C1) of glucose is labelled with 14C (specific activity of 10 mCi/mmole). After one round of glycolysis, the specific activity of radiolabelled pyruvate is: 1. 0 2. […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Specialized Histone Associated with Centromeric Regions of Chromosomes
133. A specialized histone associated with the centromeric region of the chromosome is: A. CenH3 B. H2A.Z C. H3.3 D. H2A.X Detailed Explanation: In eukaryotic cells, chromosomes are highly organized […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Rho-independent vs. Rho-dependent Termination of Transcription
72. The common feature of Rho-independent and Rho-dependent termination of transcription is: 1. the active signal lies in the direct repeats in nascent RNA 2. the active signal lies in […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Key Microorganism for Yogurt Production: Streptococcus thermophilus
132. The principle microorganism for yogurt is: A. Streptococcus thermophilus B. Lactobacillus acidophilus C. Streptococcus lactis D. Leuconostoc citrovorum Correct Answer: A. Streptococcus thermophilus Detailed Explanation: The production of yogurt […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Title: Understanding Enhancers in Gene Regulation
70. Which of the following statements is NOT correct about enhancers? 1. They can function in either orientation 2. They decrease the binding of activators near the promoter 3. They […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Factors Affecting the Duration of Declining Log Phase in Monod Kinetics
131. In a batch culture of cells following Monod Kinetics, the declining log phase lasts longer when: A. Initial substrate concentration is high B. Initial substrate concentration is low C. […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Impact of Amino Acid Changes on Enzyme Activity
69. Which of the following amino acid changes in the active site of an enzyme is most likely to change its activity? 1. Lys → Arg 2. Leu → Ile […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Understanding the Differences Between IPTG and Lactose in the Lac Operon System
68. Which of the following statements about IPTG and lactose is NOT correct? 1. IPTG is an analog of lactose 2. Both IPTG and lactose are inducers of the lac […]
