Microorganisms: Friend and Foe

  
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1. The medicines that kill or stop the growth of disease causing microorganisms are called .

2. are single celled, prokaryotic microorganisms, which can be seen only under microscope.

3. The organisms which carry the pathogens from diseased person to a healthy person are called .

4. is the process of conversion of sugar into alcohol by Yeast.

5. Bacteria responsible for the formation of curd from milk is .

6. The process of conversion of atmospheric nitrogen into its usable forms is called .

7. Disease causing microorganisms are called .

8. is the process of heating milk to about 70 degree centigrate for 15- 30 seconds and suddenly cooled.

9. The is a substance which is injected to trigger the body to develop its own defence.

10. Bacterium living in the root nodules of leguminous plants is .