Front

What is a pathogen?

Back

A pathogen is a microorganism that can cause disease in a host organism.

Front

What is a host in the context of disease?

Back

A host is an organism that harbors a pathogen, providing it with nutrients and a suitable environment to live.

Front

What is a vector?

Back

A vector is an organism that transmits a pathogen from one host to another, often without being affected by the disease itself.

Front

What are the four main types of pathogens?

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The four main types of pathogens are bacteria, viruses, fungi, and parasites.

Front

What is the difference between bacteria and viruses?

Back

Bacteria are single-celled living organisms that can reproduce on their own, while viruses are non-living entities that require a host cell to replicate.

Front

What is an example of a disease caused by bacteria?

Back

Strep throat is an example of a disease caused by bacteria.

Front

How can diseases be transmitted through direct contact?

Back

Diseases can be transmitted through direct contact by touching an infected person or their bodily fluids.

Front

What is an example of a disease transmitted by a vector?

Back

Lyme disease is an example of a disease transmitted by a tick, which is the vector.

Front

What is the role of the immune system in disease?

Back

The immune system protects the body against pathogens by identifying and destroying them.

Front

What is an infectious disease?

Back

An infectious disease is a disease caused by the invasion of pathogens that can be spread from one person to another.