Heath - Pathogens, Bacteria, Protists - GCSE Science
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What is a pathogen — and how do bacteria and protists actually cause disease?
In this episode of GCSE Science Simplified, we break down two major groups of disease-causing microorganisms: bacteria and protists. Using clear explanations and real GCSE-relevant examples, you’ll learn how cholera, tuberculosis (TB), and malaria affect the human body and why they spread in different ways.
We explore:
The GCSE definition of a pathogen
How bacterial diseases like cholera cause diarrhoea and TB damages the lungs
How protist diseases like malaria damage the liver and blood
Why malaria requires a mosquito vector
Key differences between bacterial and protist infections
Perfect for GCSE Biology revision, foundation learning in health and disease, or anyone wanting a clear, jargon-free explanation of how microorganisms make us ill.
🎧 Next episode: Viruses and fungi — how they infect the body and spread disease