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 […]
H.S.A. Natural Sciences Previous Question Papers Kerala Public Service Commission (K-PSC) (HSA Natural Science Exam 2006) Original question paper of Kerala PSC HSA (High School Assistant) in Natural Sciences (Biology, Life Science, Botany and Zoology) examination conducted by Kerala PSC (Kerala Public Service Commission) for the appointment of High School […]
H.S.A. Natural Sciences Previous Question Papers Kerala Public Service Commission (K-PSC) (HSA Natural Science Exam 2006) Original question paper of Kerala PSC HSA (High School Assistant) in Natural Sciences (Biology, Life Science, Botany and Zoology) examination conducted by Kerala PSC (Kerala Public Service Commission) for the appointment of High School […]
H.S.A. Natural Sciences Previous Question Papers Kerala Public Service Commission (K-PSC) (HSA Natural Science Exam 2006) Original question paper of Kerala PSC HSA (High School Assistant) in Natural Sciences (Biology, Life Science, Botany and Zoology) examination conducted by Kerala PSC (Kerala Public Service Commission) for the appointment of High School […]
H.S.A. Natural Sciences Previous Question Papers Kerala Public Service Commission (K-PSC) (HSA Natural Science Exam 2006) Original question paper of Kerala PSC HSA (High School Assistant) in Natural Sciences (Biology, Life Science, Botany and Zoology) examination conducted by Kerala PSC (Kerala Public Service Commission) for the appointment of High School […]