Any infectious agent that can cause disease is called a
The first layer of the body against pathogens is the
A single-celled, prokaryotic microorganism
Examples are amoebas, algae; can cause malaria
Causes Mad Cow Disease
A large, eukaryotic, multicellular, parasitic worm
Can cause ringworm, valley fever, athletes foot
Causes whooping cough, TB, strep throat
Causes the Flu, Covid-19, common cold
Any of various infectious proteins that are abnormal forms of normal cellular proteins
An example is a tapeworm that can live and feed in human intestines
Any of a large group of nonliving, submicroscopic infective agents that typically comprise an RNA or DNA core of genetic material surrounded by a protein coat
Saprophytic and parasitic spore-producing eukaryotic organisms that lack chlorophyll
Any eukaryotic protist of the phylum or subkingdom Protozoa
Prions
Viruses
Bacteria
Protists
Helminths
Fungi
All pathogens are living organisms
Pathogens can be visible with the naked eye or with a microscope