74. Myasthenia Gravis is primarily caused due to 1. degeneration of muscles. 2. defects in adrenergic receptor system. 3. defects in the cholinergic receptors system. 4. kidney failure. What […]
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DBT BET JRF 2023 Previous Year Questions and Video solutions
The Role of FLOWERING LOCUS C (FLC) in Arabidopsis Flowering Regulation
73. Following are certain statements regarding FLOWERING LOCUS C (FLC) gene in Arabidopsis: A. FLC is a strong repressor of flowering. B. Higher expression of FLC induces early flowering. C. […]
DBT BET JRF 2023 Previous Year Questions and Video solutions
Why E. coli BL21(DE3) Is Preferred for Protein Expression Using pET Vectors
148. The E. 𝑐𝑜𝑙𝑖 strain 𝐵𝐿21(𝐷𝐸3) is used for expressing recombinant proteins whose genes are cloned in the 𝑝𝐸𝑇 series vectors. The primary reason for this is: 1. 𝐵𝐿21(𝐷𝐸3) lacks […]
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 Doesn’t 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 I […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Understanding Partition-Based Bioseparation Techniques: What Doesn’t Belong?
200. Which one of the following is NOT used for partition based bio-separation? 1. Solvent extraction 2. Electrodialysis 3. Salting out 4. Adsorption chromatography Introduction Bioseparation is a critical step […]
