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Pathogens and transmission

Pathogens and transmission

A pathogen is a microorganism that causes communicable disease, such as a virus, bacterium, fungus or protist. A host is an organism in or on which a pathogen lives and reproduces.

6.3.3 Spread of communicable diseases Lesson

  1. GCSE
  2. /Biology
  3. /6.3.3 Spread of communicable diseases

Step-by-step lessons on OCR GCSE Biology 6.3.3 Spread of communicable diseases. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.

Lessons