BI-1470
Antibiotic resistance
Biology · Secondary 4 · Hard · Antibiotic resistance
A farmer sprays antibiotics on chickens to prevent bacterial infections. Over time, some bacteria in the flock become resistant to the antibiotic. Which statement best explains how this resistance spreads in the bacterial population?
- Resistant bacteria survive, reproduce, and pass on the resistance to their offspring.
- All bacteria become resistant immediately when exposed to the antibiotic once.
- The antibiotic changes every bacterium’s DNA in the same way to make them resistant.
- Non-resistant bacteria grow faster than resistant ones when the antibiotic is present.
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