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Pathogens are microorganisms which can cause disease. These include bacteria, viruses and fungi. Have a look at the little things!
(Did you know viruses aren’t actually “alive”? They’re more like seeds – they multiply under certain conditions, but otherwise, they’re dead.)
Pathogens can cause disease when they invade the interface between an organism and their environment. This could be someone’s skin, lungs, digestive system, etc.
There are two ways which you need to know about in which pathogens cause disease: 1) damage to the cells, and 2) producing toxins.
Here is a video that shows how a flu virus invades your body and causes illness.
OMG that’s great! Actually just helped me with my homework
mabelbarc The Student Room
Thank you for making all the content btw!
Serena Kutty YouTube
Hi! I have recently finished my first year doing biology at uni and I subscribed to you back when I was doing AQA A levels (glad I don’t live in Wales after watching this vid lol) and you and your website helped me so much. Just wanted to say it’s so nice to see you
Mr Peanutbutter YouTube
You explain everything so simply!
SecretDuck The Student Room
Good topic notes and cool videos. I'll definitely recommend it to my students.
Seema Sehgal AQA Examiner and biology teacher on LinkedIn