Pathogens 3.1.1
- Created by: EleanorRose.
- Created on: 29-01-15 18:44
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- Pathogens
- A disease causing microbe
- Bacteria
- Viruses
- Fungi
- When invaded by a pathogen that organism becomes a host
- Cholera is contracted by drinking water contaminated with faeces containing vibrio cholerae
- When a pathogen duplicates it is called cloning
- Recognisable symptoms = a disease
- Transmission is when a pathogen passes from one organelle to another
- An epidemic is a wide spread disease
- A pandemic is a globally spread disease
- The body has 4 main interfaces
- The skin
- The digestive system
- The gas exchange system
- The reproductive and urinary system
- The pathogens penetrate the interface between the environment and host
- the body has natural non-specific defence mechanisms
- Waterproof skin
- SAlty tears
- thick mucus
- Ear wax
- Stomach acid
- If pathogens enter our body, our immune system has ways to prevent damage
- Antibodies
- Antitoxins
- White blood cells
- Pathogens have 2 ways of damaging the body
- Create toxins
- Usually bacteria as the are larger and cannot enter cells
- Damage cells and tissues of host
- Usually viruses as they are smaller and can get into cells
- Create toxins
- A disease causing microbe
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