Tag: DBT JRF PYQ-2022

200. Which one of the following is commonly used as a selection marker for developing transgenic plants? A. Green fluorescent protein B. 𝛽-lactamase C. 𝛽-galactosidase D. Hygromycin phosphotransferase   Answer: […]

199. Which of the following are the sulfur containing amino acids? i. Methionine ii. Histidine iii. Leucine iv. Cysteine A. (ii) and (i) B. (i) and (iv) C. (iv) and […]

198. A protein completely unfolds in 8 M Urea. The stability of the folded state in water is calculated to be 8 kcal/mole at 25°𝐶. What is the likely ∆𝐺 […]

197. Commercial production of citric acid is done by fermentation using: A. Aspergillus niger B. Clostridium butyricum C. Saccharomyces cerevisiae D. Lactobacillus acidophilus Explanation: Citric acid is an important organic […]

196. Latency is a characteristic of which one of the following viruses? A. Herpes virus B. Polio virus C. Rhino virus D. Influenza virus Explanation: Latency refers to a phase […]

195. Which regions of the genome are best suited for generating DNA Barcodes for species identification? A. Organellar genes B. Ribosomal genes C. Histone genes D. Non coding regions of […]

194. Amide bonds between two amino acids (as shown below) are generally in trans-conformation. The atoms are labeled as A1 through A6. The angle measured for defining the trans-conformation of […]

193. Which one of these is a metal containing Vitamin? A. Vitamin C B. Vitamin B1 C. Vitamin B12 D. Vitamin A Explanation: Vitamin B12 (Cobalamin): Contains the metal cobalt […]

192. Given below are two statements one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: Phosphomannose isomerase (PMI) from E. coli was used […]

191. Given below are two statements: Statement I: Polycistronic mRNAs are found in archaea and bacteria. Statement II: Plastid genes in eukaryotes have only mono-cistronic mRNA. In the light of […]