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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