ICMR JRF Model Question Paper with Answer Key (Part-07)

(1). Which of the following characteristic differentiate lysosome from other cell organelles? a.       Lysosome is a micro organelle b.      Lysosome is a single membrane bounded organelle c.       Lysosomes present only in plants d.      All the above (2). The main function of carotenoid in photosynthesis is: a.       Light absorption b.      Prevention […]

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ICMR JRF Model Question Paper (Part-6)

(1).  The exact function of leg hemoglobin in the root nodule induced by Rhizobium in legume plants is:           a.       Transport of oxygen b.      Transport of Nitrogenase to the nodule c.       Transport of nitrates from the nodule d.      Protection of Nitrogenase enzyme (2). The genome of CaMV (Cauliflower Mosaic Virus) is: […]

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Free Net Life Science Study Materials

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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