IB Biology SL C3.2.13 Antibiotics Questions

Explore how antibiotics block bacterial processes absent from human cells, while viral disease requires treatments targeting viral replication in IB Biology SL C3.2.13.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Explain that antibiotics selectively block bacterial metabolic or cellular processes that are absent from eukaryotic cells.
  • Explain why antibiotics do not treat viral disease: viruses lack the bacterial processes that antibiotics target.
  • Distinguish antibiotics from antivirals: antibiotics do not treat viral infections, whereas antiviral drugs are used against viral pathogens.

IB Biology SL C3.2.13 Antibiotics Questions question 1

[Maximum number: 2]

Outline why antibiotics are effective against bacteria but not against viruses.

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