B2

Anotações:

• MOs include things like bacteria, viruses and fungi. Some of them cause infections diseases.

1. Symptoms caused by cell damage or toxins.

   Anotações:

   •  All MOs damage the body in one way or another by damaging the body's cells.
   • Some MOs damage cells directly  by causing instant painful swelling.
   • Others may release toxins to damage the holding cells so they can invade the body more deeply to cause poisoning. 
2. MOs reproduce quickly inside the human body.

   Anotações:

   • Bacteria reproduces very quickly in side the human body because of the great living conditions. 
   •  Bacteria's need a source of nutrients, warmth and moisture conditions so their chemical reactions can take place.
   • In the human body bacteria can find many of the cells it needs to create a virus. All it takes is a few bacteria's to start a large colony.
3. Equation of MOs growth