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Ans : (a) Penicillin G
Benzylpenicillin (Penicillin G) is narrow spectrum antibiotic used to treat infections caused by susceptible bacteria.
It is a natural penicillin antibiotic that is administered intravenously or intramuscularly due to poor oral absorption.
The non-essential amino acid among the following is: (1) valine (2) leucine (3) alanine (4) lysine