Biology B3-Science mini test
This is really basic but it kinda maybe a little will help!
- Created by: Tuta Akad
- Created on: 22-04-17 17:00
Other questions in this quiz
2. how many defences are there and name them
- 1)external -physical barriers:mucus,tears,hairs and skin. Another line of defence healing wounds (forming scabs:platelets and fibrin) and the nose 2)Internal- HCl acid in stomach so when digested microbes get killed,Immune system
- dumb answer
3. Explain immune system
- dumb answer
- The immune system is a system that protects the body.The white blood cells attack and destroy the pathagon.There are 2 types of WBC 1-Phagocytes:ingest pathagon 2- Lymphocytes:produce antibodies which clump antigens+produce antitoxins netrualise
- ..posionous effect
4. what are pathogens and how can they spread?
- Pathogens are microorganisms that cause infections(communicable) diseases. They can be spread by: -direct contact -water or air - vectors(spread diseases but dont catch them itself E.g: Mosquito-Malaria
- are viruses
- are bacteria
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