Biology - Cause Of Disease

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  • Created by: Amy
  • Created on: 27-12-12 23:42
What is a pathogen?
A bacteria, virus or fungi.
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What two ways do microorganisms get into the boy?
The gas exchange system and the digestive system.
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What three way does the body prevent the entry of pathogens?
A mucus layer that covers exchange surfaces and forms a thick sticky barrier that is difficult to penetrate, the production of enzymes which break down the pathogen and the production of stomach acid which kills microorganisms.
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How do pathogens cause disease?
By damaging host tissues and producing toxins.
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What is the definition of a risk?
A measure of the probability that damage to health will occur as a result of a given hazard.
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Other cards in this set

Card 2

Front

What two ways do microorganisms get into the boy?

Back

The gas exchange system and the digestive system.

Card 3

Front

What three way does the body prevent the entry of pathogens?

Back

Preview of the front of card 3

Card 4

Front

How do pathogens cause disease?

Back

Preview of the front of card 4

Card 5

Front

What is the definition of a risk?

Back

Preview of the front of card 5

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