(1). In an experimental approach, the trp operon and lac operon were fused. Under what condition there would be the expression of β‐galactosidase occurs. a. Low lactose and glucose b. High lactose and glucose c. Low tryptophan d. High tryptophan (2). Which antibiotic is responsible for premature termination of translation […]
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NET Life Sciences Model Question Paper (14)
(1). A flow cytometer is used to measure the number of a. Cells b. DNA c. RNA d. Proteins (2). How many H atoms would be replaced CCl4 in presence of ethanol during NMR spectrum? a. 1 b. 2 c. 3 d. 4 (3). During the regulation of trp operon […]
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JRF NET Life Sciences June 2017 Free Model Question Papers (13)
(1). Most of the DNA binding protein binds to DNA by particular motif to modulate gene expression. Genes which are under the regulation of gibberllic acid have GRE where, GREB binds. The motif in GREB is ______ a. Leucine Zipper b. bZIP c. Zinc finger d. Homoedomain (2). Which of […]
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CSIR JRF NET Life Sciences December 2017 Model Question (12)
(1). The characteristics of organisms the reaches first to barren Island during the ecological succession: a. Slow growth and small generation time b. Slow growth and large generation time c. Fast growth and small generation time d. Fast growth and large generation time Learn more: Process of Ecological Succession (2). […]
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CSRI JRF NET Life Sciences June Model Question (11)
1. Penicillin-resistant bacteria produce β-lactamase which inactivates penicillin by: a. Esterifying the carboxyl group b. Oxidizing S atom c. Hydrolyzing the side chain d. Hydrolyzing the C-N bond Ans. (d) β-lactamases or penicillinase are a class of enzymes produced by some bacteria which degrade penicillin antibiotic and thereby impart resistance […]
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