pathogens

Pathogens

• Pathogens are the four forms of infectious agents.
• These can cause disease and illness and possible kill.
• A definition for pathogen is something that disrupts the normal physiology
• of a multicellular animal or plant

types of pathogens

• parasites
• virus
• bacteria
• fungi 

parasites

• parasites are living creatures that live and feed of a host
• parasites are usually smaller that their host and don't kill them
• if a parasite killed his host he would hav to find another to feed from
• parasites are catagoriest by their interaction with host
• parasites can live in skin, mouths, immune systems, and eyes

virus

• virus are small infectious agent that replicate inside living cells 
• virus are very dangerous and can even cause death
• virus are non-living pathogens but are upon the deadliest 
• virus are single celled and have no internal cell structure
• virus can be transefered by air, blood, and water.

bacteria

• bacteria are living organisms and are also single celled
• bacteria can either be bad or good depending on the DNA
• bacteria can also be good to one animal, and bad to another
• bacteria are prokaryotic microorganisms and are usually a few micrometers 
• bacteria also come in may shapes and sizes

fungi

• fungi is a living organism and can live on most surfaces
• fungi is part of a large group of organisms that can include yeast and mold
• fungi is abundant worldwide and usually grow on dead matter
• fungi can also grow on your feet like athletes foot
• most fungi are minor but some can be life threatening like