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Esme Nias Pages 294296 16.3.16

Communicable diseases


These are diseases caused by infective organisms known as pathogens (including
bacteria, virus, fungi and protoctista)
These diseases can be passed on from one organism to another
In animals, they can not only be spread within species, but between species
Vectors carry the…

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Esme Nias Pages 294296 16.3.16

The protists which cause disease are parasitic = they use people or animals as
their host organism
They need a vector to transport them to their host (malaria) or they may enter
through polluted water

Fungi

Mainly a problem in plants
Eukaryotic organisms that are…

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