Which of the following antibiotics is bactericidal?
A
Erythromycin
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B
Tetracycline
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C
Penicillin
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D
Chloramphenicol
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Solution
The correct option is C Penicillin
An antibiotic refers to a substance produced wholly or partly by chemical synthesis, which in low concentrations inhibits the growth or destroys microorganisms by intervening in their metabolic processes.
Antibiotics have either cidal (killing) effect or a static (inhibitory) effect on microbes.
Ampicillin and Amoxycillin are synthetic modifications of penicillins. These have broad spectrum. It is absolutely essential to test the patients for sensitivity (allergy) to penicillin before it is administered