Tag: dbt jrf 2019

78. What is the minimum number of tRNAs required to recognize all six codons of serine (UCU, UCA, UCG, UCC, AGU and AGC)? (1) 2 (2) 3 (3) 4 (4) […]

The type of transport that does NOT reach Vmax is: (1) Simple diffusion across lipid bilayer (2) Facilitated diffusion via uniporters (3) Movement of ions through ion channels (4) Primary […]

76. CRISPR/Cas9 is an example of bacterial adaptive immunity. The transcription of CRISPR loci generates small crispr-RNAs (crRNA) to specifically target viral DNA, but not CRISPR loci, by forming complex […]

75. Underwinding or overwinding of circular dsDNA generates supercoils only when it does NOT have any of the following: (1) Nicks (2) repeat sequences (3) G:C rich regions (4) A:T […]

74. Which one of the following changes occurs in a directionally migrating eukaryotic cell? (1) The ER is fragmented. (2) The mitochondrial membrane potential drops. (3) The nucleus moves towards […]

73. If nondisjunction of a chromosome occurs in meiosis II, what will be the product at the completion of meiosis? (1) All the gametes will be diploid (2) Two gametes […]

69. In genomic DNA denaturation and renaturation experiments, which one of the following regions would renature the earliest? (1) Single-copy gene (2) Satellite DNA (3) Pseudogenes (4)Multi copy gene families […]

68. Which one of the following techniques can be utilized to study both protein–peptide and protein–DNA interactions? (1) DNA footprinting (2) 2D-gel electrophoresis (3) Phage display (4) ChIP-on-chip assay 🧬 […]

67. Following statements are about chromatin organisation in eukaryotes: i. The length of DNA per nucleosome varies for individual tissue or species. ii. Typical nucleosomal packaging pattern is strictly maintained […]