148. The E. ππππ strain π΅πΏ21(π·πΈ3) is used for expressing recombinant proteins whose genes are cloned in the ππΈπ series vectors. The primary reason for this is: 1. π΅πΏ21(π·πΈ3) lacks […]
Tag: DBT JRF PYQ-2023
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DBT BET JRF 2023 Previous Year Questions and Video solutions
Understanding Palindromic Sequences and Their Role in Restriction Enzymes
72. Given below are two statements: Statement I: Palindromic sequences are DNA sequences that are the same when each strand of DNA is read in the same direction. Statement II: […]
DBT BET JRF 2023 Previous Year Questions and Video solutions
Colchicine and Mitosis: The Specific Stage It Inhibits
149. Which stage of mitosis is blocked by colchicine? 1. Prophase 2. Telophase 3. Anaphase 4. Metaphase Introduction Colchicine is a chemical compound commonly used in biological research and medicine. […]
DBT BET JRF 2023 Previous Year Questions and Video solutions
Understanding the Role of Glial Cells and Myelin in Neuronal Function
71. Given below are two statements: Statement I: Glial cells form myelin around the axons of neurons Statement II: Myelin enables the rapid transmission of action potentials down an axon […]
DBT BET JRF 2023 Previous Year Questions and Video solutions
Understanding Bacterial Capsules: Functions and a Common Misconception
150. Many bacteria produce an extracellular capsule composed of a network of polysaccharides and/or proteins that are loosely attached to the cell wall. Which of the following statement is INCORRECT […]
DBT BET JRF 2023 Previous Year Questions and Video solutions
Why Base Substitution in DNA Doesnβt Always Lead to Mutant Phenotypes
70. Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: A base substitution in DNA does not always […]
DBT BET JRF 2023 Previous Year Questions and Video solutions
Cellular Components and Their Functions: GPI, SRP, PDI, and BiP Explained
69. Match List I with List II LIST IΒ Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β […]
DBT BET JRF 2023 Previous Year Questions and Video solutions
Does DNA Denaturation Involve Breaking Covalent Bonds?
68. Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: Heat and extremes of pH cause denaturation, or […]
DBT BET JRF 2023 Previous Year Questions and Video solutions
How Rotor Diameter Affects RPM in Centrifugation
67. Cells are successfully pelleted in a small rotor at 10,000 rpm for 5 minutes. If we now use a bigger rotor with twice the diameter to pellet the cells […]
DBT BET JRF 2023 Previous Year Questions and Video solutions
Growth Factor-Regulated Cyclin Expression in Plants
66. The expression of, which one of the following types of cyclins in plants is modulated by growth factors, such as cytokinins, auxins, brassinosteroids, sucrose and gibberelins? 1. A-Type 2. […]
