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Q.88 CREB1 is a eukaryotic transcription factor. In which one of the followingcompartments of the cell is CREB1 predominantly localized?(A) lysosomes(B) mitochondria(C) nucleus(D) peroxisomes CREB1, a key eukaryotic transcription factor, […]

Q.87 Codon bias is correlated with the relative frequencies of which one of the followingtypes of RNA?(A) mRNA(B) rRNA(C) siRNA(D) tRNA The correct answer is (D) tRNA. Codon bias refers […]

Q.86 Which one of the following tissues/organs is least likely to experiencegraft rejection when transplanted from a person to an unrelated person?(A) bone marrow(B) cornea(C) heart(D) kidney Cornea is the […]

Q.85 Which one of the following statements about gene expression is INCORRECT?(A) DNA is transcribed to mRNA.(B) mRNA can be reverse–transcribed to DNA.(C) mRNA can be translated to protein.(D) Protein […]

Q.84 A fluorescence microscope with an objective lens of numerical aperture (NA) 1.5is used with light of wavelength (λ) 600 nanometers. The lateral resolution limit ofthis microscope rounded off to […]

Q.83 A landfill sample was analyzed by dilution and plating techniques for viablebacterial count. When one gram of the landfill sample was diluted 1 x 10–4 (w/v) ityielded 400 CFU. […]

Q.82 At t = 0, the bacterial cell number is 10,000 cells/mL. At t = 480 minutes, the cellnumber increased to 320,000 cells/mL. The mean generation time during thisexponential growth […]

Q.81 Which of the following is/are TRUE about the Escherichia coli chromosome?(A) It is typically bound by histones(B) It is circular in nature(C) It is found in the nucleoid(D) It […]

Q.80 At root nodules, which of the following C4 organic acid(s) is/are transported acrossthe symbiosome membrane and into bacteroids?(A) Succinate(B) Pyruvate(C) Malate(D) Fumarate Succinate, malate, and fumarate are the primary […]

Q.79 Which of the following is/are consequence(s) of nitrous acid (HNO2) mediateddeamination?(A) Deamination of cytosine, adenine and guanine(B) GC–to–AT transitions(C) AT– to– GC transitions(D) Addition of alkyl group to the […]