Q. Consider the following statements I. Antibiotics are chemical substances produced by some microorganisms which can kill or retard the growth of other disease-causing microorganisms II. Penicillin is the first antibiotic discovered by Alexander Fleming (1928), while working o bacterium $Staphylococcus\ aureus$ III. The function of penicillin as an antibiotic was established by Ernst chain and Howard Florey Which of the statement given above are correct?
A) I and II
B) I and III
C) II and III
D) I, II and III
Explanation
Antibiotics are chemical substances produced by some microorganism, which can kill or retard the growth of other disease causing microorganisms. Penicillin, discovered by Alexander Flemming, is the first antibiotic discovered. While working on Staphylococcus aureus bacteria, Flemming observed growth of mould around, which the bacteria did not grow. It was found to be a chemical, penicillin, produced by Penicillium notatum. The function of penicillin as an antibiotic was established by Ernst Chain and Howard Florey
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.