Biol 1 - Pathogens Revision notes on pathogens, aqa AS biology unit 1 1.5 / 5 based on 2 ratings ? BiologyASAQA Created by: StephanieCreated on: 12-05-12 14:17 Pathogens A pathogen is an organ that causes disease -can be bacteria, fungi or virus Penetration: via interfaces with the environment Gas-Exchange System Digestive system Skin (any wound or cut) 1 of 2 Infection A pathogen can infect the body by either: Secretion of harmful toxins Damage to cells -rupturing -breaking down cells nutrients for own use -replicating inside a cell and bursting it 2 of 2
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