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B3 (viral fungal and protist (viral (HIV, Tobacco mosaic, Measles), fungal…
B3
viral fungal and protist
fungal
rose black spot
is a fungus that gets onto one plant causing leaves to drop and then spreads to other plants
protist
Malaria is caused by a protist
the tsetse fly carries the disease and when it comes into contact with humans it spreads the disease
viral
HIV
Tobacco mosaic
Measles
communicable disease
there are several types of pathogen
viruses are not cells
reproduce rapidly and replicate themselves
protists are single cell eukaryotes
they come in the form of parasites
Bacteria are small living cells
1/100 of your cells but produce rapidly
fungi come in different shapes and sizes
they grow and penetrate the human skin
spread through water air and contact
Fighting disease
The body has sophisticated defence system
the skin acts as a barrier to pathogens
hair traps potentially dangerous particles
hydrochloric acid in stomach kills pathogens
the immune system attacks pathogen
it will either consume them
or produce antibodies to invade and kill them