There are two main classes of antibiotics, broad spectrum and narrow spectrum.
Broad spectrum antibiotics affect a wide range of bacteria, while narrow spectrum antibiotics affect specific types of bacteria.
Which uses of antibiotics may result in antibiotic-resistant bacteria?
1) a broad spectrum antibiotic given to reduce the effects of the influenza virus
2) a broad spectrum antibiotic to treat Mycobacterium tuberculosis in humans
3) a narrow spectrum antibiotic to treat diarrhoea and sickness in cattle
1, 2 and 3
2 )
1 and 2 only
3 )
1 and 3 only
4 )
2 and 3 only
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