Fragile X syndrome is caused by a fragile site at the end of the long arm of X chromosome. Such a disorder is 1. X-linked 2. all the given options […]
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DBT BET JRF 2019 Previous Year Questions and Video solution
How Many Dipeptides Can Be Formed from L-Alanine and L-Glycine? Exploring Peptide Bond Formation
A young scientist was interested in creating a dipeptide using L-alanine and L-glycine. How many different dipeptides can be generated? (1) One (2) Two (3) Three (4) Four 📘 Problem […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding Baeyer-Villiger Monooxygenases and Their Oxidative Reactions
13. Baeyer-Villiger monooxygenases (BVMOs) are flavin-dependent enzymes that catalyse oxidations. Which one of the following oxidation is NOT carried out by BVMOs? (a) Aldehydes to carboxylic acids, (b) Ketones and […]
DBT BET JRF 2019 Previous Year Questions and Video solution
How Long Does It Take for 100 mg of 14C to Completely Disintegrate
14C has a half-life of 5760 years; 100 mg of a sample of 14C will completely disintegrate in: (1) 23,040 years (2) 1440 years (3) 11,520 years (4) infinite time […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding the Role of Thiamine Pyrophosphate in Pyruvate Decarboxylation
12. Pyruvate decarboxylase catalyses the decarboxylation of pyruvic acid to acetaldehyde and carbon dioxide. Its action depends on cofactors thiamine pyrophosphate (TPP) and magnesium. In this process, the role of […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
At What pH Are the Concentrations of Acetic Acid and Acetate Ion Equal? A Guide to pKa and Buffer Chemistry
The pKa of acetic acid is 4.76. At what pH would the concentration of acetic acid and acetate ion be the same? (1) pH= 7 (2) pH = 6.7 (3) […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding Nucleic Acid Modifications: DNA, tRNA, and mRNA
10. In the following table, List I has different nucleic acids and List II has certain base modifications. Match the components from the List I with those in the List […]
DBT BET JRF 2019 Previous Year Questions and Video solution
How to Calculate Final Concentration After Heating and Dilution
While making 100 ml of 2M NaCl solution, a student left the solution on a heating platform reducing the volume by 50 ml. This solution was diluted 1:100 for use. […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
What Is Opsonization? How Antibodies Tag Pathogens for Destruction
Opsonization is the process of 1. coating of foreign substances by antibody 2. coating of foreign substances by MHC 3. coating of foreign substances by TCR 4. none of the […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding the Behavior of Protein X in Gel Filtration and SDS-PAGE: Insights into Protein Structure
9. You have isolated a hypothetical protein X. When X is run on a gel filtration column, the apparent size of the protein is 80 kDa. When X is run […]
