A boy appears for a test and scores 35% but fails by 10 marks. If he had scored 46%, he would have passed by 12 marks. What is the pass […]
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DBT BET JRF 2021 Previous Year Questions and Video solution
Immunoglobulin IgE and Its Role in Type-I Hypersensitivity Reactions
3. Which one of the Immunoglobulins (Ig) cause type-I hypersensitive immune reaction? (a) .IgA, (b) .IgE, (c) .IgG, (d) .IgM, Article: Introduction Type-I hypersensitivity reactions, commonly known as allergic reactions, […]
DBT BET JRF 2019 Previous Year Questions and Video solution
Triangle Inequality Rule: Which Side Length Is Not Possible for a Triangle with Sides 4 cm and 7 cm?
Two sides of a triangle measure 4 cm and 7 cm. Which one of the following CANNOT be a measure of the third side? (1) 4 cm (2) 5 cm […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding the ELISPOT Assay: Measuring Cytokine Release at the Single-Cell Level
2. Enzyme-linked immunospot (ELISPOT) assay measures: (a) Cytokine concentration in culture supernatant , (b) Expression of cytokine gene (c) Intracellular cytokine concentration (d) Number of cytokine releasing cells at single […]
DBT BET JRF 2019 Previous Year Questions and Video solution
How to Make 0.4 M HCl from 28% w/w Concentrated HCl
To make 2 liters of 0.4 M HCl, how many ml of 28% w/w HCl (specific gravity = 1.15) is required? (1) 80.7 (2) 90.7 (3) 100.7 (4) 110.7 How […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
How Enzymes Bind Substrates: The Role of Hydrogen Bonds, Hydrophobic Interactions, and Shape Complementarity
Enzymes bind their substrates via 1. hydrogen bonds 2. hydrophobic interactions 3. all of the given options are correct 4. shape complementarity Understanding How Enzymes Bind Substrates Enzymes are biological […]
DBT BET JRF 2019 Previous Year Questions and Video solution
What Is the pH of 0.001 M HCl? A Simple Guide to pH Calculation
The pH of a 0.001 molar HCl solution in H2O is: (1) 1 (2) 2 (3) 3 (4) 4 What Is the pH of 0.001 M HCl in Water? If […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Why Topoisomerase is Not Needed in PCR Reactions: An In-depth Explanation
1. DNA replication requires DNA-Topoisomerase to remove the supercoiling of DNA that accumulates at the end of a growing replication fork. You wish to perform a PCR amplification of a […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
What Happens to Ovalbumin When You Boil an Egg? Understanding Protein Denaturation
The egg white protein, ovalbumin, is denatured in a hard-boiled egg. Which of the following i least affected? 1. quaternary structure of ovalbumin 2. primary structure of ovalbumin 3. secondary […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding Type-I Hypersensitivity: The Role of IgE in Allergic Reactions
53. Which one of the Immunoglobulins (Ig) cause type-I hypersensitive immune reaction? (a)IgA (b)IgE (c)IgG (d)IgM Article: Introduction Type-I hypersensitivity refers to allergic reactions that occur rapidly after exposure to […]
