Microbes And Disease
Viruses are a type of mircobe.
Microbes that cause diseases are called pathogens.
Bacteria are just big enough to be seen through a light microscope.
Some have a flagellum that they use to move around.
Bacteria causes diseases such as tuberculosis, food poisoning, pneumonia and cholera.
Yeasts are single-celled organisms.
Viruses do not have a cell membrane or a nucleus.
Protozoa cause diseases such as malaria and sleeping sickness.