disease

communicable diseases revision notes

-pathoegens are micro organisums that can cause infectious diseases that can effect both plants and animals.

-communicable means that the disease is infectious/spreadable

-the types of pathoegen are: bacteria,fungi,virus and protist

-to survive bacteria needs warmth,nuetrients and moisture.

-bacteria reproduce every 20 minutes

-toxins released by the bacteria make you feel ill when they damage your cells and tissues

- viruses cannot replicte on their own, they enter normal cells and use them to multiply. when they have created enough copies of themselves…