MICROORGANISM
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•Bacteria<br />
•Algae<br />
•Fungi<br />
•Protozoa<br />
•Viruses
Shape<br />
Rod shape/Bacilli<br />
Spherical/Cocci<br />
Spiral/Spirilla
Inside host<br />
Use host machinery<br />
For multiplication<br />
It is outside the host<br />
Inactive<br />
In number<br />
No activity
Burst the host cell<br />
Infact other cell<br />
Person fall sick
Harmful And Useful<br />
Of Microorganism
Usage Of Microorganism
• Making curd and Bread<br />
• Medicinal use of<br />
Microorganism<br />
• Increasing Soil Fertility<br />
• Cleaning the<br />
Environment<br />
• Vaccine<br />
• commercial production<br />
of alcohol and wine
Yeast is an example of microorganism. It is a<br />
fungus. It is used to make bread. There are air<br />
spaces in the bread. The air spaces are caused<br />
by carbon dioxide gas given out whenthe<br />
yeast acts on the dough. This shows that<br />
microorganisms breath.
Harmless Of Microorganism
Harmful microorganisms can cause<br />
disease<br />
Some disease can easily spread from one<br />
person to another. They are called contagious<br />
diseases. Examples are influenza, measles,<br />
mumps and chicken pox.
How do microorganisms spread<br />
from one person to another?<br />
• Through food and drink.<br />
• Sneezing or coughing.<br />
• Direct contact.<br />
• Carried by mosquitoes or flies.<br />
• Microorganisms can also spread through the<br />
air.
How to prevent disease from<br />
spreading?<br />
• Wash your hands before handling food<br />
especially after using the toilet.
Drink water that has been boiled<br />
because boiling kills microorganisms.
• Cover your mouth when coughing or sneezing<br />
to prevent microorganisms from spreading<br />
into the air.
• Do not share personal items such as<br />
toothbrush, towel and comb.
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