Causes of disease 0.0 / 5 ? BiologyHealth, illness and diseaseASAQA Created by: lucyebradleyCreated on: 06-04-14 11:51 What is a pathogen? A micro organism that causes disease 1 of 5 What must a micro organism do to be considered a pathogen? Gain entry to the host, Colonise the tissues of the host, Resist the defences of the host and Cause damage to the hosts tissue 2 of 5 What is transmission? When a pathogen is transferred from 1 person to another 3 of 5 How do micro organisms get into the body? Gas exchange system and Digestive system 4 of 5 What natural defences prevent the entry of pathogens? Mucus layer, Enzymes and Stomach acid 5 of 5
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