107. Primary neurotransmitter that plays a role in sleep, appetite, arousal and mood is: 1. Serotonin 2. Acetylcholine 3. Octopamine 4. Glutamate Introduction: Serotonin is a primary neurotransmitter that plays […]
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DBT BET JRF 2018 Previous Year Questions and Video solution
Understanding Human Olfactory Receptors: The Role of G-Protein Coupled Receptors in Smell
106. Human olfactory receptors are: 1. Ionotropic receptors 2. G-protein coupled receptors 3. Thermoreceptors 4. Fc receptors Introduction: Human olfactory receptors are specialized proteins that allow us to detect and […]
DBT BET JRF 2018 Previous Year Questions and Video solution
: Understanding Erythroblastosis Fetalis: The Role of Immunity in Haemolytic Disease of the Newborn
105. Haemolytic disease of the new born called erythroblastosisfetalis commonly develops in mothers with repeated pregnancies owing to the activation of: 1. IgG- secreting memory cells 2. IgE- secreting memory […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Understanding Tetanus Toxoid: Retaining Immunogenicity and Safety in Vaccines
104. Tetanus toxoid is a protein that has been chemically treated to retain its: 1. Toxicity and antigenicity 2. Toxicity and immunogenicity 3. Immunogenicity and not its toxicity 4. Antigenicity […]
DBT BET JRF 2022 Previous Year Questions and Video solution
How to Identify Chiral Centers in Organic Molecules: A Step-by-Step Guide
150. How many chiral centers are there in each of these two molecules? A. 1 and 1 B. 1 and 2 C. 2 and 2 D. 4 and 3 […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Title: The Hapten-Carrier Hypothesis in Vaccine Design: Impact on Immunization Against Diseases
103. Hapten-carrier hypothesis was useful in the designing of the vaccine for: 1. Polio myelitis 2. Vibrio cholerae 3. Haemophilusinfluenzae B 4. Corynebacteriumdiphtheriae Introduction: The hapten-carrier hypothesis plays a crucial […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Anti-Human μ Chain Antibody: Specificity and Role in Immunology
102. Anti-human μ chain antibody is specific for epitopes present in the: 1. Constant region of the Ig molecule 2. Variable region of the Ig molecule 3. CDR region of […]
DBT BET JRF 2022 Previous Year Questions and Video solution
How to Calculate the Molecular Weight of the Tripeptide Trp-Gly-His
149. What will be the molecular weight of the tri-peptide Trp-Gly-His? Molecular weights of Trp, Gly, and His are 204.2, 75.07, and 155.2 respectively. A. 434.47 B. 300.00 C. 398.47 […]
DBT BET JRF 2019 Previous Year Questions and Video solution
Title: Understanding SCID Mice and Their Lack of T-Cells: A Detailed Explanation
101. SCID mice lack T-cells owing to the: 1. Absence of thymus 2. Defect in recombinase genes 3. Defect in expression of pre-TCR 4. Absence of terminal deoxynucleotidetransferase Introduction: Severe […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Understanding RNA Secondary Structure and Its Role in RNA Folding
148. Given below are two statements: Statement I: RNA secondary structure is composed primarily of double-stranded RNA regions formed by folding of the single-stranded molecule back on itself. Statement II: […]
