Agents of Disease

A _____ results when a disease-causing organism invades and begins growing within another organism (a host).

• disorder

• infection

• pandemic

• pathogen

This pathogen is actually a protein. There is no cure for diseases caused by this agent.

• Viruses

• Bacteria

• Prions

• Fungi

This type of pathogen is non-living. The best way to prevent these pathogens from infecting a person is vaccination and proper hygiene. Example: Influenza

• Bacteria

• Virus

• Helminths

• Protists

These pathogens are living and are uni-cellular. They can be treated with antibiotics.

• Bacteria

• Prions

• Protists

• Fungi

What do scientists call organisms, viruses, or proteins that can make people sick? 

• Diseases

• Vaccines

• Antibodies

• Pathogens

Any agent that causes a disease.

• germ

• pathogen

• micro-organism

• all of the above (different terms that mean the same thing)

Different groups of agents that caused diseases are

• bacteria

• viruses

• protozoans

• all of these

An infectious disease is spread between different organisms and is caused by a(n)

• Genetic mutation

• Exposure to toxic chemicals

• pathogens

Vaccines are used to prevent diseases by which type of pathogen?

• virus

• bacteria

• parasite

• fungi

Any living or nonliving thing that causes infectious diseases.

• Pathogen

• Bacteria

• Fungi