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What Is a Pathogen?

What Is a Pathogen?

A pathogen is a microorganism or virus that causes disease. The four main pathogen groups are bacteria, viruses, fungi and protists.

5.1.3 Pathogens as disease-causing organisms Lesson

  1. GCSE
  2. /Biology
  3. /5.1.3 Pathogens as disease-causing organisms

Step-by-step lessons on Edexcel GCSE Biology 5.1.3 Pathogens as disease-causing organisms. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.

Lessons