A major organism used in commercial bioleaching for copper recovery is 1. Thiobacillusferrooxidans 2. Desulfovibriodesulfuricans 3. Pseudomonas aeruginosa 4. Aspergillusniger Detailed Explanation: The correct answer is: 1. Thiobacillus ferrooxidans […]
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DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding Cooperativity in Protein Folding: All-or-None Phenomenon Explained
96. Protein folding is highly cooperative. Which one of the following statement define this cooperativity? (a) If one protein unfolds, it forces a nearby protein to unfold too, (b) If […]
DBT BET JRF 2019 Previous Year Questions and Video solution
Understanding the Role of Glycosylation in Monoclonal Antibodies
126. Glycosylation of a monoclonal antibody DOES NOT affect: (1) in vivo stability of antibody (2) mediation of phagocytosis and cytotoxicity of antibody (3) efficacy of monoclonal antibody (4) fluorescence […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Why Mercury Does Not Wet Glass: The Role of Surface Tension
The fluid property, due to which, mercury does not wet the glass is 1. surface tension 2. specific gravity 3. polarity 4. viscosity Detailed Explanation: The correct answer is: 1. […]
DBT BET JRF 2019 Previous Year Questions and Video solution
Barnase and Barstar System in GM Mustard: Mechanism of Male Sterility and Fertility Restoration
125. In genetically modified Dhara Mustard Hybrid – 11, male sterility is conferred by ………, while ………….. restores fertility. (1) barnase, barstar (2) barstar, barnase (3) bar, barnase (4) barnase, […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding the Beta-Sheet Rich Structure of Prion Proteins
The 𝜷 − 𝒔𝒉𝒆𝒆𝒕 rich structure of prion protein represents the 1. abnormal disease-causing protein 2. soluble form of the protein 3. normal functional protein 4. intermediator state of the […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding Peptide Bond Planarity and the Ramachandran Plot in Protein Structure
95. Given below are two statements: Statement I: The peptide bond is a planar bond Statement II: The Ramachandran Plot describes Omega Torsion Angles in proteinsIn light of the above […]
DBT BET JRF 2019 Previous Year Questions and Video solution
Systemic Acquired Resistance: How Plants Build Immunity After Pathogen Attack
124. A plant that survives a local pathogen infection, often develops increased resistance to a subsequent attack by a mechanism called: (1) Systemic Acquired Resistance (2) DAMP-triggered immunity (3) Hypersensitive […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Cellular Sources of Reactive Oxygen Species (ROS): What the Nucleus Doesn’t Do
Which of the following organelle is NOT a site for Reactive Oxygen Species (ROS) generation? 1. nucleus 2. mithochondria 3. peroxisomes 4. endoplasmic reticulum Detailed Explanation: The correct answer […]
DBT BET JRF 2021 Previous Year Questions and Video solution
How Tryptophan Fluorescence Helps Uncover Protein Folding Mechanisms
94. Trp florescence can be used to study protein folding and unfolding. Which properties of Trp are critical in ensuring that this can be used for studying the process? (a) […]
