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IB Biology SL 3.2.1 Pathogens cause infectious diseases Question Bank

Practise IB Biology SL 3.2.1 by linking pathogens, toxins and transmission to symptoms, dehydration and treatment in named diseases.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Define pathogens and link toxins or bacteria to disease symptoms, transmission and treatment.
  • Use cholera and food-poisoning evidence to link transmission to diarrhea, dehydration and appropriate treatment.

C3.2.1—Pathogens cause infectious diseases question 1

[Maximum number: 1]

Define pathogen.

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