The word antibiotic was originally defined, in 1942, as being any substance produced by a microorganism that inhibits the growth of another microorganism. How does the modern definition of antibiotic differ?
A. An antibiotic is any chemical, natural or synthetic, that inhibits the growth of a microorganism.
B. An antibiotic is a synthetic chemical that inhibits the growth of infectious bacteria.
C. An antibiotic is a chemical that damages the DNA of infectious bacteria.
D. An antibiotic is any chemical that inhibits the growth of any organism, not just a microorganism.
Answer (2)
The modern definition of antibiotics includes any chemical, whether natural or synthetic, that inhibits microbial growth. This broadens the scope from the original definition, which limited antibiotics to substances produced by microorganisms. This understanding includes crucial synthetic antibiotics developed for effective medical treatments. ;
The modern definition of antibiotics includes any chemical, whether natural or synthetic, that inhibits the growth of microorganisms. This diverges from the original definition, which restricted antibiotics to substances produced by microorganisms. Therefore, the correct option is A: 'An antibiotic is any chemical, natural or synthetic, that inhibits the growth of a microorganism.'
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