Even though narrow spectrum antibiotics are only effective against a few species, they are preferred because ______.

Even though narrow spectrum antibiotics are only effective against a few species, they are preferred because ______.



A. They can kill microbes faster.
B. Broad spectrum antibiotics are often toxic to humans.
C. They are never toxic to humans.
D. Broad spectrum antibiotics will kill the normal microbiota as well.
E. The protection they provide lasts longer.


Answer: D. Broad spectrum antibiotics will kill the normal microbiota as well.


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