O Levels Biology (5090)•5090/12/O/N/23

Explanation
Antibiotics target bacteria specifically
Steps:
- Identify the purpose of antibiotics: they kill or inhibit bacteria.
- Distinguish between infection types: bacterial vs. viral.
- Recall that antibiotics do not affect viruses, cancer, or non-infectious diseases.
- Match the question to the correct category: bacterial infections.
Why A is correct:
- Antibiotics work by disrupting bacterial cell walls or protein synthesis, as defined in microbiology.
Why the others are wrong:
- B: Cancer involves uncontrolled cell growth, treated with chemotherapy or radiation, not antibiotics.
- C: Heart disease is a cardiovascular condition managed by lifestyle changes or surgery, not antibiotics.
- D: Viral infections require antivirals or vaccines, as antibiotics cannot target viral replication.
Final answer: A
Topic: Antibiotics
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